diff --git a/simple-mind-map/src/Node.js b/simple-mind-map/src/Node.js
index 9db807db..2f5b615b 100644
--- a/simple-mind-map/src/Node.js
+++ b/simple-mind-map/src/Node.js
@@ -845,7 +845,7 @@ class Node {
      * @Date: 2021-04-10 22:01:53 
      * @Desc: 连线 
      */
-    renderLine() {
+    renderLine(deep = false) {
         if (this.nodeData.data.expand === false) {
             return
         }
@@ -867,9 +867,11 @@ class Node {
             // 添加样式
             this.styleLine(line, node)
         })
-        // 和父级的连线也需要更新
-        if (this.parent) {
-            this.parent.renderLine()
+        // 子级的连线也需要更新
+        if (deep && this.children && this.children.length > 0) {
+            this.children.forEach((item) => {
+                item.renderLine(deep)
+            })
         }
     }
 
diff --git a/simple-mind-map/src/Render.js b/simple-mind-map/src/Render.js
index a6eb7c22..14f710eb 100644
--- a/simple-mind-map/src/Render.js
+++ b/simple-mind-map/src/Render.js
@@ -5,7 +5,8 @@ import CatalogOrganization from './layouts/CatalogOrganization'
 import OrganizationStructure from './layouts/OrganizationStructure'
 import TextEdit from './TextEdit'
 import { copyNodeTree, simpleDeepClone, walk } from './utils'
-import { shapeList } from './Shape';
+import { shapeList } from './Shape'
+import { lineStyleProps } from './themes/default'
 
 // 布局列表
 const layouts = {
@@ -734,6 +735,10 @@ class Render {
             }
         }
         this.setNodeDataRender(node, data)
+        // 更新了连线的样式
+        if (lineStyleProps.includes(prop)) {
+            (node.parent || node).renderLine(true)
+        }
     }
 
     /** 
diff --git a/simple-mind-map/src/themes/default.js b/simple-mind-map/src/themes/default.js
index d901f784..78354999 100644
--- a/simple-mind-map/src/themes/default.js
+++ b/simple-mind-map/src/themes/default.js
@@ -127,4 +127,6 @@ export default {
 
 // 支持激活样式的属性
 // 简单来说，会改变节点大小的都不支持在激活时设置，为了性能考虑，节点切换激活态时不会重新计算节点大小
-export const supportActiveStyle = ['fillColor', 'color', 'fontWeight', 'fontStyle', 'borderColor', 'borderWidth', 'borderDasharray', 'borderRadius', 'textDecoration']
\ No newline at end of file
+export const supportActiveStyle = ['fillColor', 'color', 'fontWeight', 'fontStyle', 'borderColor', 'borderWidth', 'borderDasharray', 'borderRadius', 'textDecoration']
+
+export const lineStyleProps = ['lineColor', 'lineDasharray', 'lineWidth']
\ No newline at end of file