diff --git a/simple-mind-map/src/constants/defaultOptions.js b/simple-mind-map/src/constants/defaultOptions.js
index 5f09a779..a830cdfb 100644
--- a/simple-mind-map/src/constants/defaultOptions.js
+++ b/simple-mind-map/src/constants/defaultOptions.js
@@ -245,6 +245,8 @@ export const defaultOpt = {
   emptyTextMeasureHeightText: 'abc123我和你',
   // 是否在进行节点文本编辑时实时更新节点大小和节点位置，开启后当节点数量比较多时可能会造成卡顿
   openRealtimeRenderOnNodeTextEdit: false,
+  // 默认会给容器元素el绑定mousedown事件，并且会阻止其默认事件，这会带来一定问题，比如你聚焦在思维导图外的其他输入框，点击画布就不会触发其失焦，可以通过该选项关闭阻止。关闭后也会带来一定问题，比如鼠标框选节点时可能会选中节点文字，看你如何取舍
+  mousedownEventPreventDefault: true,
 
   // 【Select插件】
   // 多选节点时鼠标移动到边缘时的画布移动偏移量
diff --git a/simple-mind-map/src/core/view/View.js b/simple-mind-map/src/core/view/View.js
index 94980e59..3c6ef130 100644
--- a/simple-mind-map/src/core/view/View.js
+++ b/simple-mind-map/src/core/view/View.js
@@ -30,8 +30,11 @@ class View {
     })
     // 拖动视图
     this.mindMap.event.on('mousedown', e => {
-      if (this.mindMap.opt.isDisableDrag) return
-      e.preventDefault()
+      const { isDisableDrag, mousedownEventPreventDefault } = this.mindMap.opt
+      if (isDisableDrag) return
+      if (mousedownEventPreventDefault) {
+        e.preventDefault()
+      }
       this.sx = this.x
       this.sy = this.y
     })
diff --git a/simple-mind-map/src/plugins/Select.js b/simple-mind-map/src/plugins/Select.js
index d80865f6..eaf93f9b 100644
--- a/simple-mind-map/src/plugins/Select.js
+++ b/simple-mind-map/src/plugins/Select.js
@@ -41,7 +41,8 @@ class Select {
 
   // 鼠标按下
   onMousedown(e) {
-    if (this.mindMap.opt.readonly) {
+    const { readonly, mousedownEventPreventDefault } = this.mindMap.opt
+    if (readonly) {
       return
     }
     let { useLeftKeySelectionRightKeyDrag } = this.mindMap.opt
@@ -51,7 +52,9 @@ class Select {
     ) {
       return
     }
-    e.preventDefault()
+    if (mousedownEventPreventDefault) {
+      e.preventDefault()
+    }
     this.isMousedown = true
     this.cacheActiveList = [...this.mindMap.renderer.activeNodeList]
     let { x, y } = this.mindMap.toPos(e.clientX, e.clientY)