diff --git a/simple-mind-map/example/exampleData.js b/simple-mind-map/example/exampleData.js
index 5362a8f8..d1e23677 100644
--- a/simple-mind-map/example/exampleData.js
+++ b/simple-mind-map/example/exampleData.js
@@ -785,8 +785,8 @@ const data3 = {
 
 export default {
     // ...data1,
-    // ...data2,
-    ...data3,
+    ...data2,
+    // ...data3,
     "theme": {
         "template": "default",
         "config": {
@@ -794,6 +794,7 @@ export default {
         }
     },
     // "layout": "mindMap",
-    "layout": "logicalStructure"
-    // "layout": "catalogOrganization"
+    // "layout": "logicalStructure"
+    "layout": "catalogOrganization"
+    // "layout": "organizationStructure"
 }
\ No newline at end of file
diff --git a/simple-mind-map/index.js b/simple-mind-map/index.js
index 95b39f71..5e9d2a55 100644
--- a/simple-mind-map/index.js
+++ b/simple-mind-map/index.js
@@ -123,7 +123,7 @@ class MindMap {
      */
     handleOpt(opt) {
         // 检查布局配置
-        if (!['logicalStructure'].includes(opt.layout)) {
+        if (!['logicalStructure', 'mindMap', 'catalogOrganization', 'organizationStructure'].includes(opt.layout)) {
             opt.layout = 'logicalStructure'
         }
         // 检查主题配置
diff --git a/simple-mind-map/src/Node.js b/simple-mind-map/src/Node.js
index 4a6950db..ecc3b685 100644
--- a/simple-mind-map/src/Node.js
+++ b/simple-mind-map/src/Node.js
@@ -85,6 +85,8 @@ class Node {
         this._expandBtnSize = this.mindMap.opt.expandBtnSize
         // 初始渲染
         this._initRender = true
+        // 更新的时候的钩子
+        this.updateHooks = []
         // 初始化
         this.createNodeData()
         this.getSize()
@@ -485,7 +487,7 @@ class Node {
         // 创建组
         this.group = new G()
         this.draw.add(this.group)
-        this.update(false)
+        this.update(true)
         // 节点矩形
         this.style.rect(this.group.rect(width, height))
         // 图片节点
@@ -595,7 +597,7 @@ class Node {
      * @Date: 2021-07-04 22:47:01 
      * @Desc: 更新节点
      */
-    update(animate = true) {
+    update(layout = false) {
         if (!this.group) {
             return
         }
@@ -603,11 +605,15 @@ class Node {
         if (this._expandBtn && this.nodeData.children.length <= 0) {
             this.removeExpandBtn()
         } else if (!this._expandBtn && this.nodeData.children.length > 0) {// 需要添加展开收缩按钮
-
             this.renderExpandBtn()
         }
+        if (!layout) {
+            this.updateHooks.forEach((hook) => {
+                hook(this)
+            })
+        }
         let t = this.group.transform()
-        if (animate) {
+        if (!layout) {
             this.group.animate(300).translate(this.left - t.translateX, this.top - t.translateY)
         } else {
             this.group.translate(this.left - t.translateX, this.top - t.translateY)
@@ -637,18 +643,6 @@ class Node {
                     item.render()
                 }
             }))
-            // let index = 0
-            // let loop = () => {
-            //     if (index >= this.children.length) {
-            //         return
-            //     }
-            //     this.children[index].render()
-            //     setTimeout(() => {
-            //         index++
-            //         loop()
-            //     }, 0)
-            // }
-            // loop()
         }
     }
 
@@ -669,18 +663,6 @@ class Node {
                     item.remove()
                 }
             }))
-            // let index = 0
-            // let loop = () => {
-            //     if (index >= this.children.length) {
-            //         return
-            //     }
-            //     this.children[index].remove()
-            //     setTimeout(() => {
-            //         index++
-            //         loop()
-            //     }, 0)
-            // }
-            // loop()
         }
     }
 
@@ -749,6 +731,20 @@ class Node {
         this._expandBtn.add(fillNode).add(node)
     }
 
+    /** 
+     * javascript comment 
+     * @Author: 王林25 
+     * @Date: 2021-07-12 18:18:13 
+     * @Desc: 更新展开收缩按钮位置 
+     */
+    updateExpandBtnPos() {
+        if (!this._expandBtn) {
+            return
+        }
+        console.log('更新')
+        this.renderer.layout.renderExpandBtn(this, this._expandBtn)
+    }
+
     /** 
      * @Author: 王林 
      * @Date: 2021-04-11 19:47:01 
diff --git a/simple-mind-map/src/Render.js b/simple-mind-map/src/Render.js
index 368fc1d2..1aca04ec 100644
--- a/simple-mind-map/src/Render.js
+++ b/simple-mind-map/src/Render.js
@@ -2,6 +2,7 @@ import merge from 'deepmerge'
 import LogicalStructure from './layouts/LogicalStructure'
 import MindMap from './layouts/MindMap'
 import CatalogOrganization from './layouts/CatalogOrganization';
+import OrganizationStructure from './layouts/OrganizationStructure'
 import TextEdit from './TextEdit'
 
 // 布局列表
@@ -11,7 +12,9 @@ const layouts = {
     // 思维导图
     mindMap: MindMap,
     // 目录组织图
-    catalogOrganization: CatalogOrganization
+    catalogOrganization: CatalogOrganization,
+    // 组织结构图
+    organizationStructure: OrganizationStructure
 }
 
 /** 
diff --git a/simple-mind-map/src/layouts/CatalogOrganization.js b/simple-mind-map/src/layouts/CatalogOrganization.js
index f56a4faf..fc5511f1 100644
--- a/simple-mind-map/src/layouts/CatalogOrganization.js
+++ b/simple-mind-map/src/layouts/CatalogOrganization.js
@@ -1,14 +1,13 @@
 import Base from './Base';
 import {
-    walk
+    walk,
+    asyncRun
 } from '../utils'
-import Node from '../Node'
 
 /** 
  * @Author: 王林 
  * @Date: 2021-04-12 22:25:58 
  * @Desc: 目录组织图 
- * 思路：第一轮只计算节点的宽高，以及某个节点的所有子节点所占的高度之和，以及该节点里所有子节点中宽度最宽是多少、第二轮计算节点的left和top，需要区分二级节点和其他节点，二级节点top相同，一行依次从做向右排开，其他节点的left相同，一列从上往下依次排开
  */
 class CatalogOrganization extends Base {
     /** 
@@ -26,61 +25,46 @@ class CatalogOrganization extends Base {
      * @Date: 2021-04-06 14:04:20 
      * @Desc: 布局
      */
-    doLayout() {
-        // 遍历数据计算节点的width、height
-        this.computedBaseValue()
-        // 计算节点的left、top
-        this.computedLeftTopValue()
-        // 调整节点top
-        this.adjustTopValue()
-        // 调整节点left
-        // this.adjustLeftValue()
-
-        return this.root;
+    doLayout(callback) {
+        let task = [() => {
+            this.computedBaseValue()
+        }, () => {
+            this.computedLeftValue()
+        }, () => {
+            // this.adjustTopValue()
+        }, () => {
+            callback(this.root)
+        }]
+        asyncRun(task)
     }
 
     /** 
      * javascript comment 
      * @Author: 王林25 
      * @Date: 2021-04-08 09:49:32 
-     * @Desc: 遍历数据计算节点的width、height
+     * @Desc: 遍历数据计算节点的left、width、height
      */
     computedBaseValue() {
-        walk(this.renderTree, null, (cur, parent, isRoot, layerIndex) => {
-            // 创建节点
-            let newNode = new Node({
-                data: cur,
-                uid: this.mindMap.uid++,
-                renderer: this.renderer,
-                mindMap: this.mindMap,
-                draw: this.draw,
-                layerIndex
-            })
-            // 数据关联实际节点
-            cur._node = newNode
+        walk(this.renderer.renderTree, null, (cur, parent, isRoot, layerIndex) => {
+            let newNode = this.createNode(cur, parent, isRoot, layerIndex)
             // 根节点定位在画布中心位置
             if (isRoot) {
-                newNode.isRoot = true
                 newNode.left = (this.mindMap.width - newNode.width) / 2
                 newNode.top = (this.mindMap.height - newNode.height) / 2
-                this.root = newNode
             } else {
-                // 互相收集
-                newNode.parent = parent._node
-                parent._node.addChildren(newNode)
+                // 非根节点
+                // 定位到父节点下方
+                newNode.top = parent._node.top + parent._node.height + this.getMarginX(layerIndex)
+            }
+            if (!cur.data.expand) {
+                return true;
             }
         }, (cur, parent, isRoot, layerIndex) => {
-            // 返回时计算节点的areaHeight，也就是子节点所占的高度之和，包括外边距
-            let len = cur._node.children.length
-            if (isRoot) {// 计算二级节点所占的宽度之和
-                cur._node.childrenAreaWidth = len ? cur._node.children.reduce((h, item) => {
-                    return h + item.width
-                }, 0) + (len + 1) * this.getMarginX(layerIndex) : 0
-            }
-            // 计算子节点所占的高度之和
-            cur._node.childrenAreaHeight = len ? cur._node.children.reduce((h, item) => {
-                return h + item.height
-            }, 0) + (len + 1) * this.getMarginY(layerIndex) : 0
+            // 返回时计算节点的areaWidth和areaHeight，也就是子节点所占的高度之和，包括外边距
+            let len = cur.data.expand === false ? 0 : cur._node.children.length
+            cur._node.childrenAreaWidth = len ? cur._node.children.reduce((h, item) => {
+                return h + item.width
+            }, 0) + (len + 1) * this.getMarginY(layerIndex + 1) : 0
         }, true, 0)
     }
 
@@ -88,31 +72,19 @@ class CatalogOrganization extends Base {
      * javascript comment 
      * @Author: 王林25 
      * @Date: 2021-04-08 09:59:25 
-     * @Desc: 计算节点的left、top
+     * @Desc: 遍历节点树计算节点的left 
      */
-    computedLeftTopValue() {
+    computedLeftValue() {
         walk(this.root, null, (node, parent, isRoot, layerIndex) => {
-            let marginX = this.getMarginX(layerIndex)
-            let marginY = this.getMarginY(layerIndex)
-            if (node.children && node.children.length) {
-                if (node.isRoot) {
-                    let left = node.left + node.width / 2 - node.childrenAreaWidth / 2
-                    let totalLeft = left + marginX
-                    node.children.forEach((cur) => {
-                        // left
-                        cur.left = totalLeft
-                        totalLeft += cur.width + marginX
-                        // top
-                        cur.top = node.top + node.height + marginY
-                    })
-                } else {
-                    let totalTop = node.top + node.height + marginY
-                    node.children.forEach((cur) => {
-                        cur.left = node.left + node.width / 5
-                        cur.top = totalTop
-                        totalTop += cur.height + marginY
-                    })
-                }
+            if (node.nodeData.data.expand && node.children && node.children.length) {
+                let marginX = this.getMarginY(layerIndex + 1)
+                // 第一个子节点的left值 = 该节点中心的left值 - 子节点的宽度之和的一半
+                let left = node.left + node.width / 2 - node.childrenAreaWidth / 2
+                let totalLeft = left + marginX
+                node.children.forEach((cur) => {
+                    cur.left = totalLeft
+                    totalLeft += cur.width + marginX
+                })
             }
         }, null, true)
     }
@@ -121,17 +93,17 @@ class CatalogOrganization extends Base {
      * javascript comment 
      * @Author: 王林25 
      * @Date: 2021-04-08 10:04:05 
-     * @Desc: 调整节点top，该节点之后的节点都往下进行偏移
+     * @Desc: 调整节点top 
      */
     adjustTopValue() {
         walk(this.root, null, (node, parent, isRoot, layerIndex) => {
-            let marginY = this.getMarginY(layerIndex)
-            if (!node.isRoot && !node.parent.isRoot) {
-                // 判断子节点的areaHeight是否大于该节点自身，大于则需要调整位置
-                if (node.children && node.children.length > 0) {
-                    let difference = node.childrenAreaHeight - marginY
-                    this.updateBrothersTopValue(node, difference)
-                }
+            if (!node.nodeData.data.expand) {
+                return;
+            }
+            // 判断子节点所占的高度之和是否大于该节点自身，大于则需要调整位置
+            let difference = node.childrenAreaHeight - this.getMarginY(layerIndex + 1) * 2 - node.height
+            if (difference > 0) {
+                this.updateBrothers(node, difference / 2)
             }
         }, null, true)
     }
@@ -142,77 +114,7 @@ class CatalogOrganization extends Base {
      * @Date: 2021-04-07 14:26:03 
      * @Desc: 更新兄弟节点的top
      */
-    updateBrothersTopValue(node, addHeight) {
-        if (node.parent && !node.parent.isRoot) {
-            let childrenList = node.parent.children
-            let index = childrenList.findIndex((item) => {
-                return item === node
-            })
-            childrenList.forEach((item, _index) => {
-                let _offset = 0
-                if (_index > index) {
-                    _offset = addHeight
-                }
-                item.top += _offset
-                // 同步更新子节点的位置
-                if (item.children && item.children.length && _offset > 0) {
-                    this.updateChildren(item.children, 'top', _offset)
-                }
-            })
-            // 更新父节点的位置
-            this.updateBrothersTopValue(node.parent, addHeight)
-        }
-    }
-
-    /** 
-     * javascript comment 
-     * @Author: 王林25 
-     * @Date: 2021-04-12 17:07:29 
-     * @Desc: 调整节点left 
-     */
-    adjustLeftValue() {
-        walk(this.root, null, (node, parent, isRoot, layerIndex) => {
-            let marginX = this.getMarginY(layerIndex)
-            if (node.parent && node.parent.isRoot) {
-                let childrenAreaWidth = this.getNodeWidth(node)
-                let difference = childrenAreaWidth - node.width - marginX
-                if (difference > 0) {
-                    this.updateBrothersLeftValue(node, difference / 2)
-                }
-            }
-        }, null, true)
-    }
-
-    /** 
-     * javascript comment 
-     * @Author: 王林25 
-     * @Date: 2021-04-12 18:55:03 
-     * @Desc: 计算节点的宽度，包括子节点
-     */
-    getNodeWidth(node) {
-        let widthArr = []
-        let loop = (node, width) => {
-            if (node.children.length) {
-                width += node.width / 5
-                node.children.forEach((item) => {
-                    loop(item, width)
-                })
-            } else {
-                width += node.width
-                widthArr.push(width)
-            }
-        }
-        loop(node, 0)
-        return Math.max(...widthArr)
-    }
-
-    /** 
-     * javascript comment 
-     * @Author: 王林25 
-     * @Date: 2021-04-12 18:21:46 
-     * @Desc: 调整兄弟节点的left 
-     */
-    updateBrothersLeftValue(node, addWidth) {
+    updateBrothers(node, addHeight) {
         if (node.parent) {
             let childrenList = node.parent.children
             let index = childrenList.findIndex((item) => {
@@ -220,19 +122,20 @@ class CatalogOrganization extends Base {
             })
             childrenList.forEach((item, _index) => {
                 let _offset = 0
-                if (_index > index) {
-                    _offset = addWidth
-                } else {
-                    _offset = -addWidth
+                // 上面的节点往上移
+                if (_index < index) {
+                    _offset = -addHeight
+                } else if (_index > index) { // 下面的节点往下移
+                    _offset = addHeight
                 }
-                item.left += _offset
+                item.top += _offset
                 // 同步更新子节点的位置
                 if (item.children && item.children.length) {
-                    this.updateChildren(item.children, 'left', _offset)
+                    this.updateChildren(item.children, 'top', _offset)
                 }
             })
             // 更新父节点的位置
-            this.updateBrothersLeftValue(node.parent, addWidth)
+            this.updateBrothers(node.parent, addHeight)
         }
     }
 
@@ -241,8 +144,8 @@ class CatalogOrganization extends Base {
      * @Date: 2021-04-11 14:42:48 
      * @Desc: 绘制连线，连接该节点到其子节点
      */
-    renderLine(node) {
-        return [];
+    renderLine(node, lines) {
+        return
         if (node.children.length <= 0) {
             return [];
         }
@@ -252,12 +155,7 @@ class CatalogOrganization extends Base {
             width,
             height
         } = node
-        let lines = []
-        if (!node.isRoot) {
-            let line = this.draw.line(left + width, top + height / 2, left + width + 20, top + height / 2)
-            lines.push(line)
-        }
-        node.children.forEach((item) => {
+        node.children.forEach((item, index) => {
             let x1 = node.layerIndex === 0 ? left + width / 2 : left + width + 20
             let y1 = node.layerIndex === 0 ? top + height / 2 : top + height / 2
             let x2 = item.left
@@ -268,10 +166,8 @@ class CatalogOrganization extends Base {
             } else {
                 path = this.cubicBezierPath(x1, y1, x2, y2)
             }
-            let line = this.draw.path(path)
-            lines.push(line)
+            lines[index].plot(path)
         })
-        return lines;
     }
 
     /** 
@@ -279,17 +175,13 @@ class CatalogOrganization extends Base {
      * @Date: 2021-04-11 19:54:26 
      * @Desc: 渲染按钮 
      */
-    renderExpandBtn(node, icons) {
-        return;
+    renderExpandBtn(node, btn) {
+        return
         let {
-            left,
-            top,
             width,
             height
         } = node
-        icons.forEach((icon) => {
-            icon.x(left + width).y(top + height / 2)
-        })
+        btn.translate(width, height / 2)
     }
 }
 
diff --git a/simple-mind-map/src/layouts/LogicalStructure.js b/simple-mind-map/src/layouts/LogicalStructure.js
index 682b87c5..45932e20 100644
--- a/simple-mind-map/src/layouts/LogicalStructure.js
+++ b/simple-mind-map/src/layouts/LogicalStructure.js
@@ -101,7 +101,7 @@ class LogicalStructure extends Base {
                 return;
             }
             // 判断子节点所占的高度之和是否大于该节点自身，大于则需要调整位置
-            let difference = node.childrenAreaHeight - this.getMarginY(layerIndex + 1) - node.height
+            let difference = node.childrenAreaHeight - this.getMarginY(layerIndex + 1) * 2 - node.height
             if (difference > 0) {
                 this.updateBrothers(node, difference / 2)
             }
diff --git a/simple-mind-map/src/layouts/MindMap.js b/simple-mind-map/src/layouts/MindMap.js
index c471f9a2..068be7d6 100644
--- a/simple-mind-map/src/layouts/MindMap.js
+++ b/simple-mind-map/src/layouts/MindMap.js
@@ -1,14 +1,14 @@
 import Base from './Base';
 import {
-    walk
+    walk,
+    asyncRun
 } from '../utils'
-import Node from '../Node'
 
 /** 
  * @Author: 王林 
  * @Date: 2021-04-12 22:25:58 
  * @Desc: 思维导图 
- * 思路：在逻辑结构图的基础上增加一个变量来记录生长方向，向左还是向右，同时在计算left的时候根据方向来计算、调整top时只考虑同方向的节点即可
+ * 在逻辑结构图的基础上增加一个变量来记录生长方向，向左还是向右，同时在计算left的时候根据方向来计算、调整top时只考虑同方向的节点即可
  */
 class MindMap extends Base {
     /** 
@@ -26,14 +26,17 @@ class MindMap extends Base {
      * @Date: 2021-04-06 14:04:20 
      * @Desc: 布局
      */
-    doLayout() {
-        // 遍历数据计算节点的left、width、height
-        this.computedBaseValue()
-        // 计算节点的top
-        this.computedTopValue()
-        // 调整节点top
-        this.adjustTopValue()
-        return this.root;
+    doLayout(callback) {
+        let task = [() => {
+            this.computedBaseValue()
+        }, () => {
+            this.computedTopValue()
+        }, () => {
+            this.adjustTopValue()
+        }, () => {
+            callback(this.root)
+        }]
+        asyncRun(task)
     }
 
     /** 
@@ -43,65 +46,55 @@ class MindMap extends Base {
      * @Desc: 遍历数据计算节点的left、width、height
      */
     computedBaseValue() {
-        walk(this.renderTree, null, (cur, parent, isRoot, layerIndex, index) => {
-            // 节点生长方向
-            let dir = ''
-            if (isRoot) {
-                dir = ''
-            } else if (parent._node.isRoot) {// 二级节点根据索引来判断显示在左侧还是右侧
-                dir = index % 2 === 0 ? 'right' : 'left'
-            } else {// 三级及以下节点以上级为准
-                dir = parent._node.dir
+        walk(this.renderer.renderTree, null, (cur, parent, isRoot, layerIndex, index) => {
+            let newNode = this.createNode(cur, parent, isRoot, layerIndex)
+            // 更新时展开收缩按钮位置可能会变化，需要更新
+            if (newNode.updateHooks.length <= 0) {
+                newNode.updateHooks.push((node) => {
+                    node.updateExpandBtnPos()
+                })
             }
-            // 创建节点
-            let newNode = new Node({
-                data: cur,
-                uid: this.mindMap.uid++,
-                renderer: this.renderer,
-                mindMap: this.mindMap,
-                draw: this.draw,
-                layerIndex
-            })
-            newNode.dir = dir
-            // 数据关联实际节点
-            cur._node = newNode
             // 根节点定位在画布中心位置
             if (isRoot) {
-                newNode.isRoot = true
                 newNode.left = (this.mindMap.width - newNode.width) / 2
                 newNode.top = (this.mindMap.height - newNode.height) / 2
-                this.root = newNode
             } else {
                 // 非根节点
-                let marginX = layerIndex === 1 ? this.themeConfig.second.marginX : this.themeConfig.node.marginX
-                // 根据生长方向定位到父节点的左侧还是右侧
-                newNode.left = dir === 'right' ? parent._node.left + parent._node.width + marginX : parent._node.left - newNode.width - marginX
-                // 互相收集
-                newNode.parent = parent._node
-                parent._node.addChildren(newNode)
+                // 三级及以下节点以上级为准
+                if (parent._node.dir) {
+                    newNode.dir = parent._node.dir
+                } else { // 节点生长方向
+                    newNode.dir = index % 2 === 0 ? 'right' : 'left'
+                }
+                // 根据生长方向定位到父节点的左侧或右侧
+                newNode.left = newNode.dir === 'right' ? parent._node.left + parent._node.width + this.getMarginX(layerIndex) : parent._node.left - this.getMarginX(layerIndex) - newNode.width
+            }
+            if (!cur.data.expand) {
+                return true;
             }
         }, (cur, parent, isRoot, layerIndex) => {
-            // 返回时计算节点的areaHeight，也就是子节点所占的高度之和，包括外边距
-            if (cur.data.expand === false) {
+            // 返回时计算节点的leftChildrenAreaHeight和rightChildrenAreaHeight，也就是左侧和右侧子节点所占的高度之和，包括外边距
+            if (!cur.data.expand) {
                 cur._node.leftChildrenAreaHeight = 0
                 cur._node.rightChildrenAreaHeight = 0
-                return ;
+                return
             }
+            // 理论上只有根节点是存在两个方向的子节点的，其他节点的子节点一定全都是同方向，但是为了逻辑统一，就不按特殊处理的方式来写了
             let leftLen = 0
             let rightLen = 0
-            let leftAreaHeight = 0
-            let rightAreaHeight = 0
+            let leftChildrenAreaHeight = 0
+            let rightChildrenAreaHeight = 0
             cur._node.children.forEach((item) => {
                 if (item.dir === 'left') {
                     leftLen++
-                    leftAreaHeight += item.height
+                    leftChildrenAreaHeight += item.height
                 } else {
                     rightLen++
-                    rightAreaHeight += item.height
+                    rightChildrenAreaHeight += item.height
                 }
             })
-            cur._node.leftChildrenAreaHeight = leftAreaHeight + (leftLen + 1) * this.getMarginY(layerIndex)
-            cur._node.rightChildrenAreaHeight = rightAreaHeight + (rightLen + 1) * this.getMarginY(layerIndex)
+            cur._node.leftChildrenAreaHeight = leftChildrenAreaHeight + (leftLen + 1) * this.getMarginY(layerIndex + 1)
+            cur._node.rightChildrenAreaHeight = rightChildrenAreaHeight + (rightLen + 1) * this.getMarginY(layerIndex + 1)
         }, true, 0)
     }
 
@@ -113,11 +106,12 @@ class MindMap extends Base {
      */
     computedTopValue() {
         walk(this.root, null, (node, parent, isRoot, layerIndex) => {
-            if (node.children && node.children.length) {
-                let marginY = this.getMarginY(layerIndex)
-                let top = node.top + node.height / 2
-                let leftTotalTop = top - node.leftChildrenAreaHeight / 2 + marginY
-                let rightTotalTop = top - node.rightChildrenAreaHeight / 2 + marginY
+            if (node.nodeData.data.expand && node.children && node.children.length) {
+                let marginY = this.getMarginY(layerIndex + 1)
+                let baseTop = node.top + node.height / 2 + marginY
+                // 第一个子节点的top值 = 该节点中心的top值 - 子节点的高度之和的一半
+                let leftTotalTop = baseTop - node.leftChildrenAreaHeight / 2
+                let rightTotalTop = baseTop - node.rightChildrenAreaHeight / 2
                 node.children.forEach((cur) => {
                     if (cur.dir === 'left') {
                         cur.top = leftTotalTop
@@ -139,10 +133,13 @@ class MindMap extends Base {
      */
     adjustTopValue() {
         walk(this.root, null, (node, parent, isRoot, layerIndex) => {
+            if (!node.nodeData.data.expand) {
+                return;
+            }
             // 判断子节点所占的高度之和是否大于该节点自身，大于则需要调整位置
-            let h =  this.getMarginY(layerIndex) + node.height
-            let leftDifference = node.leftChildrenAreaHeight - h
-            let rightDifference = node.rightChildrenAreaHeight - h
+            let base = this.getMarginY(layerIndex + 1) * 2 + node.height
+            let leftDifference = node.leftChildrenAreaHeight - base
+            let rightDifference = node.rightChildrenAreaHeight - base
             if (leftDifference > 0 || rightDifference > 0) {
                 this.updateBrothers(node, leftDifference / 2, rightDifference / 2)
             }
@@ -157,6 +154,7 @@ class MindMap extends Base {
      */
     updateBrothers(node, leftAddHeight, rightAddHeight) {
         if (node.parent) {
+            // 过滤出和自己同方向的节点
             let childrenList = node.parent.children.filter((item) => {
                 return item.dir === node.dir
             })
@@ -169,7 +167,7 @@ class MindMap extends Base {
                 // 上面的节点往上移
                 if (_index < index) {
                     _offset = -addHeight
-                } else if (_index > index) {// 下面的节点往下移
+                } else if (_index > index) { // 下面的节点往下移
                     _offset = addHeight
                 }
                 item.top += _offset
@@ -188,7 +186,7 @@ class MindMap extends Base {
      * @Date: 2021-04-11 14:42:48 
      * @Desc: 绘制连线，连接该节点到其子节点
      */
-    renderLine(node) {
+    renderLine(node, lines) {
         if (node.children.length <= 0) {
             return [];
         }
@@ -199,15 +197,10 @@ class MindMap extends Base {
             height,
             _expandBtnSize
         } = node
-        let lines = []
-        // if (!node.isRoot) {
-            // let line = this.draw.line(left + width, top + height / 2, left + width + 20, top + height / 2)
-            // lines.push(line)
-        // }
-        node.children.forEach((item) => {
-            let x1 = node.layerIndex === 0 ? left + width / 2 : item.dir === 'right' ? left + width + _expandBtnSize : left - _expandBtnSize
+        node.children.forEach((item, index) => {
+            let x1 = node.layerIndex === 0 ? left + width / 2 : item.dir === 'left' ? left - _expandBtnSize : left + width + 20
             let y1 = node.layerIndex === 0 ? top + height / 2 : top + height / 2
-            let x2 =  item.dir === 'right' ? item.left : item.left + item.width
+            let x2 = item.dir === 'left' ? item.left + item.width : item.left
             let y2 = item.top + item.height / 2
             let path = ''
             if (node.isRoot) {
@@ -215,10 +208,8 @@ class MindMap extends Base {
             } else {
                 path = this.cubicBezierPath(x1, y1, x2, y2)
             }
-            let line = this.draw.path(path)
-            lines.push(line)
+            lines[index].plot(path)
         })
-        return lines;
     }
 
     /** 
@@ -226,17 +217,19 @@ class MindMap extends Base {
      * @Date: 2021-04-11 19:54:26 
      * @Desc: 渲染按钮 
      */
-    renderExpandBtn(node, icons) {
+    renderExpandBtn(node, btn) {
         let {
-            left,
-            top,
             width,
             height,
             _expandBtnSize
         } = node
-        icons.forEach((icon) => {
-            node.dir === 'right' ? icon.x(left + width).y(top + height / 2) : icon.x(left - _expandBtnSize).y(top + height / 2)
-        })
+        let {
+            translateX,
+            translateY
+        } = btn.transform()
+        let x = (node.dir === 'left' ? 0 - _expandBtnSize : width) - translateX
+        let y = height / 2 - translateY
+        btn.translate(x, y)
     }
 }
 
diff --git a/simple-mind-map/src/layouts/OrganizationStructure.js b/simple-mind-map/src/layouts/OrganizationStructure.js
new file mode 100644
index 00000000..8f32c8be
--- /dev/null
+++ b/simple-mind-map/src/layouts/OrganizationStructure.js
@@ -0,0 +1,208 @@
+import Base from './Base';
+import {
+    walk,
+    asyncRun
+} from '../utils'
+
+/** 
+ * @Author: 王林 
+ * @Date: 2021-04-12 22:25:58 
+ * @Desc: 组织结构图
+ * 和逻辑结构图基本一样，只是方向变成向下生长，所以先计算节点的top，后计算节点的left、最后调整节点的left即可
+ */
+class OrganizationStructure extends Base {
+    /** 
+     * @Author: 王林 
+     * @Date: 2021-04-12 22:26:31 
+     * @Desc: 构造函数 
+     */
+    constructor(opt = {}) {
+        super(opt)
+    }
+
+    /** 
+     * javascript comment 
+     * @Author: 王林25 
+     * @Date: 2021-04-06 14:04:20 
+     * @Desc: 布局
+     */
+    doLayout(callback) {
+        let task = [() => {
+            this.computedBaseValue()
+        }, () => {
+            this.computedLeftValue()
+        }, () => {
+            this.adjustLeftValue()
+        }, () => {
+            callback(this.root)
+        }]
+        asyncRun(task)
+    }
+
+    /** 
+     * javascript comment 
+     * @Author: 王林25 
+     * @Date: 2021-04-08 09:49:32 
+     * @Desc: 遍历数据计算节点的left、width、height
+     */
+    computedBaseValue() {
+        walk(this.renderer.renderTree, null, (cur, parent, isRoot, layerIndex) => {
+            let newNode = this.createNode(cur, parent, isRoot, layerIndex)
+            // 根节点定位在画布中心位置
+            if (isRoot) {
+                newNode.left = (this.mindMap.width - newNode.width) / 2
+                newNode.top = (this.mindMap.height - newNode.height) / 2
+            } else {
+                // 非根节点
+                // 定位到父节点下方
+                newNode.top = parent._node.top + parent._node.height + this.getMarginX(layerIndex)
+            }
+            if (!cur.data.expand) {
+                return true;
+            }
+        }, (cur, parent, isRoot, layerIndex) => {
+            // 返回时计算节点的areaWidth，也就是子节点所占的宽度之和，包括外边距
+            let len = cur.data.expand === false ? 0 : cur._node.children.length
+            cur._node.childrenAreaWidth = len ? cur._node.children.reduce((h, item) => {
+                return h + item.width
+            }, 0) + (len + 1) * this.getMarginY(layerIndex + 1) : 0
+        }, true, 0)
+    }
+
+    /** 
+     * javascript comment 
+     * @Author: 王林25 
+     * @Date: 2021-04-08 09:59:25 
+     * @Desc: 遍历节点树计算节点的left
+     */
+    computedLeftValue() {
+        walk(this.root, null, (node, parent, isRoot, layerIndex) => {
+            if (node.nodeData.data.expand && node.children && node.children.length) {
+                let marginX = this.getMarginY(layerIndex + 1)
+                // 第一个子节点的left值 = 该节点中心的left值 - 子节点的宽度之和的一半
+                let left = node.left + node.width / 2 - node.childrenAreaWidth / 2
+                let totalLeft = left + marginX
+                node.children.forEach((cur) => {
+                    cur.left = totalLeft
+                    totalLeft += cur.width + marginX
+                })
+            }
+        }, null, true)
+    }
+
+    /** 
+     * javascript comment 
+     * @Author: 王林25 
+     * @Date: 2021-04-08 10:04:05 
+     * @Desc: 调整节点left
+     */
+    adjustLeftValue() {
+        walk(this.root, null, (node, parent, isRoot, layerIndex) => {
+            if (!node.nodeData.data.expand) {
+                return;
+            }
+            // 判断子节点所占的宽度之和是否大于该节点自身，大于则需要调整位置
+            let difference = node.childrenAreaWidth - this.getMarginY(layerIndex + 1) * 2 - node.width
+            if (difference > 0) {
+                this.updateBrothers(node, difference / 2)
+            }
+        }, null, true)
+    }
+
+    /** 
+     * javascript comment 
+     * @Author: 王林25 
+     * @Date: 2021-04-07 14:26:03 
+     * @Desc: 更新兄弟节点的left
+     */
+    updateBrothers(node, addWidth) {
+        if (node.parent) {
+            let childrenList = node.parent.children
+            let index = childrenList.findIndex((item) => {
+                return item === node
+            })
+            childrenList.forEach((item, _index) => {
+                let _offset = 0
+                // 上面的节点往上移
+                if (_index < index) {
+                    _offset = -addWidth
+                } else if (_index > index) { // 下面的节点往下移
+                    _offset = addWidth
+                }
+                item.left += _offset
+                // 同步更新子节点的位置
+                if (item.children && item.children.length) {
+                    this.updateChildren(item.children, 'left', _offset)
+                }
+            })
+            // 更新父节点的位置
+            this.updateBrothers(node.parent, addWidth)
+        }
+    }
+
+    /** 
+     * @Author: 王林 
+     * @Date: 2021-04-11 14:42:48 
+     * @Desc: 绘制连线，连接该节点到其子节点
+     */
+    renderLine(node, lines) {
+        if (node.children.length <= 0) {
+            return [];
+        }
+        let {
+            left,
+            top,
+            width,
+            height,
+            _expandBtnSize,
+            isRoot
+        } = node
+        let x1 = left + width / 2
+        let y1 = top + height
+        let marginX = this.getMarginX(node.layerIndex + 1)
+        let s1 = marginX * 0.7
+        let minx = 0
+        let maxx = 0
+        let len = node.children.length
+        node.children.forEach((item, index) => {
+            let x2 = item.left +item.width / 2
+            let y2 = item.top
+            if (index === 0) {
+                minx = x2
+            } else if (index >= len - 1) {
+                maxx = x2
+            }
+            let path = `M ${x2},${y1 + s1} L ${x2},${y2}`
+            lines[index].plot(path)
+        })
+        // 父节点的竖线
+        let line1 = this.draw.path()
+        node.style.line(line1)
+        _expandBtnSize = len > 0 && !isRoot ? _expandBtnSize : 0
+        line1.plot(`M ${x1},${y1 + _expandBtnSize} L ${x1},${y1 + s1}`)
+        node._lines.push(line1)
+        // 水平线
+        if (len > 1) {
+            let lin2 = this.draw.path()
+            node.style.line(lin2)
+            lin2.plot(`M ${minx},${y1 + s1} L ${maxx},${y1 + s1}`)
+            node._lines.push(lin2)
+        }
+    }
+
+    /** 
+     * @Author: 王林 
+     * @Date: 2021-04-11 19:54:26 
+     * @Desc: 渲染按钮 
+     */
+    renderExpandBtn(node, btn) {
+        let {
+            width,
+            height,
+            _expandBtnSize
+        } = node
+        btn.translate(width / 2 - _expandBtnSize / 2, height + _expandBtnSize / 2)
+    }
+}
+
+export default OrganizationStructure
\ No newline at end of file
diff --git a/simple-mind-map/src/layouts/_OrganizationStructure.js b/simple-mind-map/src/layouts/_OrganizationStructure.js
deleted file mode 100644
index 123b2c68..00000000
--- a/simple-mind-map/src/layouts/_OrganizationStructure.js
+++ /dev/null
@@ -1,183 +0,0 @@
-import {
-    walk
-} from '../Utils'
-import Node from '../Node'
-import merge from 'deepmerge'
-
-/** 
- * javascript comment 
- * @Author: 王林25 
- * @Date: 2021-04-08 16:25:07 
- * @Desc: 组织结构图
- * 思路：和逻辑结构图基本一样，只是方向变成向下生长，所以先计算节点的top，后计算节点的left、最后调整节点的left即可
- */
-class Render {
-    /** 
-     * javascript comment 
-     * @Author: 王林25 
-     * @Date: 2021-04-08 16:25:32 
-     * @Desc: 构造函数 
-     */
-    constructor(opt = {}) {
-        this.opt = opt
-        this.mindMap = opt.mindMap
-        this.draw = this.mindMap.draw
-        // 渲染树
-        this.renderTree = merge({}, this.mindMap.opt.data || {})
-        // 根节点
-        this.root = null
-    }
-
-    /** 
-     * javascript comment 
-     * @Author: 王林25 
-     * @Date: 2021-04-08 16:27:55 
-     * @Desc:  渲染
-     */
-    render() {
-        this.computed()
-        this.root.render()
-    }
-
-    /** 
-     * javascript comment 
-     * @Author: 王林25 
-     * @Date: 2021-04-06 14:04:20 
-     * @Desc: 计算位置数据 
-     */
-    computed() {
-        // 计算节点的top、width、height
-        this.computedBaseValue()
-        // 计算节点的left
-        this.computedLeftValue()
-        // 调整节点left
-        this.adjustLeftValue()
-    }
-
-    /** 
-     * javascript comment 
-     * @Author: 王林25 
-     * @Date: 2021-04-08 09:49:32 
-     * @Desc: 计算节点的top、width、height 
-     */
-    computedBaseValue() {
-        walk(this.renderTree, null, (node, parent, isRoot, index) => {
-            // 设置top、width、height
-            let {
-                children,
-                ...props
-            } = node
-            let newNode = new Node({
-                ...props,
-                mindMap: this.mindMap,
-                draw: this.draw
-            })
-            // 计算节点的宽高
-            newNode.getSize()
-            // 计算节点的top
-            if (isRoot) {
-                newNode.isRoot = true
-                newNode.left = (this.mindMap.width - newNode.width) / 2
-                newNode.top = (this.mindMap.height - newNode.height) / 2
-                this.root = newNode
-            } else {
-                newNode.top = parent._node.top + parent._node.height + this.mindMap.opt.marginY
-                newNode.parent = parent._node
-                parent._node.addChildren(newNode)
-            }
-            node._node = newNode
-        }, (node) => {
-            // 返回时计算节点的areaWidth，也就是子节点所占的宽度之和，包括外边距
-            let len = node._node.children.length
-            node._node.childrenAreaWidth = len ? node._node.children.reduce((h, cur) => {
-                return h + cur.width
-            }, 0) + (len + 1) * this.mindMap.opt.marginX : 0
-        }, true)
-    }
-
-    /** 
-     * javascript comment 
-     * @Author: 王林25 
-     * @Date: 2021-04-08 09:59:25 
-     * @Desc: 计算节点的left
-     */
-    computedLeftValue() {
-        walk(this.root, null, (node) => {
-            if (node.children && node.children.length) {
-                // 第一个子节点的left值 = 该节点中心的left值 - 子节点的宽度之和的一半
-                let left = node.left + node.width / 2 - node.childrenAreaWidth / 2
-                let totalLeft = left + this.mindMap.opt.marginX
-                node.children.forEach((cur) => {
-                    cur.left = totalLeft
-                    totalLeft += cur.width + this.mindMap.opt.marginX
-                })
-            }
-        }, null, true)
-    }
-
-    /** 
-     * javascript comment 
-     * @Author: 王林25 
-     * @Date: 2021-04-08 10:04:05 
-     * @Desc: 调整节点left
-     */
-    adjustLeftValue() {
-        let margin = this.mindMap.opt.marginX * 2
-        walk(this.root, null, (node) => {
-            // 判断子节点所占的宽度之和是否大于该节点自身，大于则需要调整位置
-            let difference = node.childrenAreaWidth - margin - node.width
-            if (difference > 0) {
-                this.updateBrothers(node, difference / 2)
-            }
-        }, null, true)
-    }
-
-    /** 
-     * javascript comment 
-     * @Author: 王林25 
-     * @Date: 2021-04-07 14:26:03 
-     * @Desc: 更新兄弟节点的left
-     */
-    updateBrothers(node, addWidth) {
-        if (node.parent) {
-            let childrenList = node.parent.children
-            let index = childrenList.findIndex((item) => {
-                return item === node
-            })
-            childrenList.forEach((item, _index) => {
-                let _offset = 0
-                if (_index < index) {
-                    _offset = -addWidth
-                } else if (_index > index) {
-                    _offset = addWidth
-                }
-                item.left += _offset
-                // 同步更新子节点的位置
-                if (item.children && item.children.length) {
-                    this.updateChildren(item.children, 'left', _offset)
-                }
-            })
-            // 更新父节点的位置
-            this.updateBrothers(node.parent, addWidth)
-        }
-    }
-
-    /** 
-     * javascript comment 
-     * @Author: 王林25 
-     * @Date: 2021-04-07 11:25:52 
-     * @Desc: 更新子节点属性 
-     */
-    updateChildren(children, prop, offset) {
-        children.forEach((item) => {
-            item[prop] += offset
-            if (item.children && item.children.length) {
-                this.updateChildren(item.children, prop, offset)
-            }
-        })
-    }
-
-
-}
-
-export default Render
\ No newline at end of file
diff --git a/web/src/pages/Edit/components/Toolbar.vue b/web/src/pages/Edit/components/Toolbar.vue
index 5261f9e0..2fda80dd 100644
--- a/web/src/pages/Edit/components/Toolbar.vue
+++ b/web/src/pages/Edit/components/Toolbar.vue
@@ -186,7 +186,6 @@ export default {
       this.activeNodes = args[1];
     });
     this.$bus.$on("back_forward", (index, len) => {
-      console.log(index, len)
       this.backEnd = index <= 0
       this.forwardEnd = index >= len - 1
     });