diff --git a/simple-mind-map/src/Event.js b/simple-mind-map/src/Event.js
index 58435609..39374272 100644
--- a/simple-mind-map/src/Event.js
+++ b/simple-mind-map/src/Event.js
@@ -28,7 +28,6 @@ class Event extends EventEmitter {
   //  绑定函数上下文
   bindFn() {
     this.onDrawClick = this.onDrawClick.bind(this)
-    this.onDrawMousedown = this.onDrawMousedown.bind(this)
     this.onMousedown = this.onMousedown.bind(this)
     this.onMousemove = this.onMousemove.bind(this)
     this.onMouseup = this.onMouseup.bind(this)
@@ -41,7 +40,6 @@ class Event extends EventEmitter {
   //  绑定事件
   bind() {
     this.mindMap.svg.on('click', this.onDrawClick)
-    this.mindMap.svg.on('mousedown', this.onDrawMousedown)
     this.mindMap.el.addEventListener('mousedown', this.onMousedown)
     this.mindMap.svg.on('mousedown', this.onSvgMousedown)
     window.addEventListener('mousemove', this.onMousemove)
@@ -54,7 +52,6 @@ class Event extends EventEmitter {
   //  解绑事件
   unbind() {
     this.mindMap.svg.off('click', this.onDrawClick)
-    this.mindMap.svg.off('mousedown', this.onDrawMousedown)
     this.mindMap.el.removeEventListener('mousedown', this.onMousedown)
     window.removeEventListener('mousemove', this.onMousemove)
     window.removeEventListener('mouseup', this.onMouseup)
@@ -68,11 +65,6 @@ class Event extends EventEmitter {
     this.emit('draw_click', e)
   }
 
-  // 画布的鼠标按下事件
-  onDrawMousedown(e) {
-    this.emit('draw_mousedown', e)
-  }
-
   //   svg画布的鼠标按下事件
   onSvgMousedown(e) {
     this.emit('svg_mousedown', e)
diff --git a/simple-mind-map/src/TextEdit.js b/simple-mind-map/src/TextEdit.js
index c28f2e9e..388e8090 100644
--- a/simple-mind-map/src/TextEdit.js
+++ b/simple-mind-map/src/TextEdit.js
@@ -23,7 +23,7 @@ export default class TextEdit {
       // 隐藏文本编辑框
       this.hideEditTextBox()
     })
-    this.mindMap.on('draw_mousedown', () => {
+    this.mindMap.on('svg_mousedown', () => {
       // 隐藏文本编辑框
       this.hideEditTextBox()
     })