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---
 simple-mind-map/src/core/render/node/nodeGeneralization.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/simple-mind-map/src/core/render/node/nodeGeneralization.js b/simple-mind-map/src/core/render/node/nodeGeneralization.js
index 89fd2ab9..597f6454 100644
--- a/simple-mind-map/src/core/render/node/nodeGeneralization.js
+++ b/simple-mind-map/src/core/render/node/nodeGeneralization.js
@@ -104,7 +104,7 @@ function renderGeneralization() {
 
 // 更新节点概要数据
 function updateGeneralizationData() {
-  const childrenLength = this.children.length
+  const childrenLength = this.nodeData.children.length
   const list = this.formatGetGeneralization()
   const newList = []
   list.forEach(item => {