diff --git a/simple-mind-map/index.js b/simple-mind-map/index.js
index 26715799..e1556230 100644
--- a/simple-mind-map/index.js
+++ b/simple-mind-map/index.js
@@ -448,6 +448,7 @@ class MindMap {
 // 插件列表
 MindMap.pluginList = []
 MindMap.usePlugin = (plugin, opt = {}) => {
+  if (MindMap.hasPlugin(plugin) !== -1) return
   plugin.pluginOpt = opt
   MindMap.pluginList.push(plugin)
   return MindMap