diff --git a/simple-mind-map/src/core/render/Render.js b/simple-mind-map/src/core/render/Render.js
index 9c21d770..b309495d 100644
--- a/simple-mind-map/src/core/render/Render.js
+++ b/simple-mind-map/src/core/render/Render.js
@@ -464,6 +464,7 @@ class Render {
 
   //  全选
   selectAll() {
+    if (this.mindMap.opt.readonly) return
     walk(
       this.root,
       null,