diff --git a/src/views/trainingPlatform/demonList.vue b/src/views/trainingPlatform/demonList.vue
index faadefe7e..ef518c5f6 100644
--- a/src/views/trainingPlatform/demonList.vue
+++ b/src/views/trainingPlatform/demonList.vue
@@ -155,7 +155,7 @@ export default {
         },
         forTree(item) {
             item.children && item.children.forEach(childrenItem => {
-                childrenItem.key = childrenItem.id + childrenItem.type;
+                childrenItem.key = item.id + childrenItem.id + childrenItem.type;
                 if (childrenItem.children && childrenItem.children.length) {
                     this.forTree(childrenItem);
                 }
@@ -207,13 +207,13 @@ export default {
             });
         },
         nodeExpand(obj, node, ele) {
-            const key = obj.id + obj.type;
+            const key = obj.key;
             this.expandList = this.expandList.filter(item => item !== key);
             this.expandList.push(key);
             localStore.set('trainIngPlatformExpandList' + this.filterSelect + this.userId + this.project, this.expandList);
         },
         nodeCollapse(obj, node, ele) {
-            const key = obj.id + obj.type;
+            const key = obj.key;
             this.expandList = this.expandList.filter(item => item !== key);
             localStore.set('trainIngPlatformExpandList' + this.filterSelect + this.userId + this.project, this.expandList);
         },