diff --git a/simple-mind-map/src/core/render/node/nodeModifyWidth.js b/simple-mind-map/src/core/render/node/nodeModifyWidth.js
index 2363366c..734fea55 100644
--- a/simple-mind-map/src/core/render/node/nodeModifyWidth.js
+++ b/simple-mind-map/src/core/render/node/nodeModifyWidth.js
@@ -8,7 +8,7 @@ function initDragHandle() {
   // 拖拽手柄元素
   this._dragHandleNodes = null
   // 手柄元素的宽度
-  this.dragHandleWidth = 2
+  this.dragHandleWidth = 4
   // 鼠标按下时的x坐标
   this.dragHandleMousedownX = 0
   // 鼠标是否处于按下状态