diff --git a/simple-mind-map/src/core/render/node/Node.js b/simple-mind-map/src/core/render/node/Node.js
index ff471177..3c04dceb 100644
--- a/simple-mind-map/src/core/render/node/Node.js
+++ b/simple-mind-map/src/core/render/node/Node.js
@@ -521,7 +521,7 @@ class Node {
         }
       }
       // 多选和取消多选
-      if ((e.ctrlKey || e.metaKey) && enableCtrlKeyNodeSelection) {
+      if (!readonly && (e.ctrlKey || e.metaKey) && enableCtrlKeyNodeSelection) {
         this.isMultipleChoice = true
         let isActive = this.getData('isActive')
         if (!isActive)