diff --git a/simple-mind-map/src/core/render/node/Style.js b/simple-mind-map/src/core/render/node/Style.js
index 164fb948..e038793b 100644
--- a/simple-mind-map/src/core/render/node/Style.js
+++ b/simple-mind-map/src/core/render/node/Style.js
@@ -12,6 +12,7 @@ const backgroundStyleProps = [
 class Style {
   //   设置背景样式
   static setBackgroundStyle(el, themeConfig) {
+    if (!this.el) return
     // 缓存容器元素原本的样式
     if (!Style.cacheStyle) {
       Style.cacheStyle = {}