diff --git a/simple-mind-map/src/core/render/node/Style.js b/simple-mind-map/src/core/render/node/Style.js
index 12078f4b..d3fa39ad 100644
--- a/simple-mind-map/src/core/render/node/Style.js
+++ b/simple-mind-map/src/core/render/node/Style.js
@@ -112,6 +112,8 @@ class Style {
 
   // 更新当前节点生效的样式数据
   addToEffectiveStyles(styles) {
+    // effectiveStyles目前只提供给格式刷插件使用，所以如果没有注册该插件，那么不需要保存该数据
+    if (!this.ctx.mindMap.painter) return
     this.ctx.effectiveStyles = {
       ...this.ctx.effectiveStyles,
       ...styles
diff --git a/simple-mind-map/src/plugins/MiniMap.js b/simple-mind-map/src/plugins/MiniMap.js
index 9f77c899..621041ad 100644
--- a/simple-mind-map/src/plugins/MiniMap.js
+++ b/simple-mind-map/src/plugins/MiniMap.js
@@ -1,8 +1,7 @@
 import {
   isWhite,
   isTransparent,
-  getVisibleColorFromTheme,
-  readBlob
+  getVisibleColorFromTheme
 } from '../utils/index'
 
 // 小地图插件