diff --git a/simple-mind-map/package-lock.json b/simple-mind-map/package-lock.json
index bf0c2f9a..762cfca1 100644
--- a/simple-mind-map/package-lock.json
+++ b/simple-mind-map/package-lock.json
@@ -1,11 +1,11 @@
 {
   "name": "simple-mind-map",
-  "version": "0.4.4",
+  "version": "0.4.5",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
-      "version": "0.4.4",
+      "version": "0.4.5",
       "license": "MIT",
       "dependencies": {
         "@svgdotjs/svg.js": "^3.0.16",
diff --git a/simple-mind-map/src/AssociativeLine.js b/simple-mind-map/src/AssociativeLine.js
index 0d58fc0c..81e63efa 100644
--- a/simple-mind-map/src/AssociativeLine.js
+++ b/simple-mind-map/src/AssociativeLine.js
@@ -1,4 +1,4 @@
-import { walk, bfsWalk } from './utils/'
+import { walk, bfsWalk, throttle } from './utils/'
 import { v4 as uuid } from 'uuid'
 
 // 关联线类
@@ -20,6 +20,8 @@ class AssociativeLine {
     // 箭头图标
     this.markerPath = null
     this.marker = this.createMarker()
+    // 节流一下，不然很卡
+    this.checkOverlapNode = throttle(this.checkOverlapNode, 100, this)
     this.bindEvent()
   }
 
diff --git a/simple-mind-map/src/Node.js b/simple-mind-map/src/Node.js
index 0ee6e456..386e9a71 100644
--- a/simple-mind-map/src/Node.js
+++ b/simple-mind-map/src/Node.js
@@ -675,6 +675,17 @@ class Node {
       if (!this.isRoot) {
         e.stopPropagation()
       }
+      // 多选和取消多选
+      if (e.ctrlKey) {
+        let isActive = this.nodeData.data.isActive
+        this.mindMap.renderer.setNodeActive(this, !isActive)
+        this.mindMap.renderer[isActive ? 'removeActiveNode' : 'addActiveNode'](this)
+        this.mindMap.emit(
+          'node_active',
+          isActive ? null : this,
+          this.mindMap.renderer.activeNodeList
+        )
+      }
       this.mindMap.emit('node_mousedown', this, e)
     })
     this.group.on('mouseup', e => {
@@ -699,7 +710,8 @@ class Node {
     })
     // 右键菜单事件
     this.group.on('contextmenu', e => {
-      if (this.mindMap.opt.readonly || this.isGeneralization) {
+      // 按住ctrl键点击鼠标左键不知为何触发的是contextmenu事件
+      if (this.mindMap.opt.readonly || this.isGeneralization || e.ctrlKey) {
         return
       }
       e.stopPropagation()
diff --git a/simple-mind-map/src/utils/index.js b/simple-mind-map/src/utils/index.js
index e71a2fdc..35f8f812 100644
--- a/simple-mind-map/src/utils/index.js
+++ b/simple-mind-map/src/utils/index.js
@@ -195,12 +195,12 @@ export const downloadFile = (file, fileName) => {
 //  节流函数
 export const throttle = (fn, time = 300, ctx) => {
   let timer = null
-  return () => {
+  return (...args) => {
     if (timer) {
       return
     }
     timer = setTimeout(() => {
-      fn.call(ctx)
+      fn.call(ctx, ...args)
       timer = null
     }, time)
   }