diff --git a/.changeset/tree-default-value.md b/.changeset/tree-default-value.md
new file mode 100644
index 000000000..3b82bf789
--- /dev/null
+++ b/.changeset/tree-default-value.md
@@ -0,0 +1,5 @@
+---
+"@vben-core/shadcn-ui": patch
+---
+
+fix: preserve tree default value when treeData starts empty
diff --git a/packages/@core/ui-kit/shadcn-ui/src/ui/tree/tree.vue b/packages/@core/ui-kit/shadcn-ui/src/ui/tree/tree.vue
index 9dc784334..9ed9e3e9d 100644
--- a/packages/@core/ui-kit/shadcn-ui/src/ui/tree/tree.vue
+++ b/packages/@core/ui-kit/shadcn-ui/src/ui/tree/tree.vue
@@ -70,7 +70,9 @@ let lastTreeData: any = null;
 onMounted(() => {
   watchEffect(() => {
     flattenData.value = flatten(props.treeData, props.childrenField);
-    updateTreeValue();
+    if (flattenData.value.length > 0) {
+      updateTreeValue();
+    }
 
     // 只在 treeData 变化时执行展开
     const currentTreeData = JSON.stringify(props.treeData);