diff --git a/packages/components/tree/src/tree-node.vue b/packages/components/tree/src/tree-node.vue
index 397286c921..bb96a19978 100644
--- a/packages/components/tree/src/tree-node.vue
+++ b/packages/components/tree/src/tree-node.vue
@@ -158,7 +158,7 @@ export default defineComponent({
       childNodeRendered.value = true
     }
 
-    const childrenKey = tree.props['children'] || 'children'
+    const childrenKey = tree.props.props['children'] || 'children'
     watch(
       () => {
         const children = props.node.data[childrenKey]