diff --git a/src/app/ui/collection-tools/examinationQuestions.ts b/src/app/ui/collection-tools/examinationQuestions.ts
index 17c0ffc..9307fa3 100644
--- a/src/app/ui/collection-tools/examinationQuestions.ts
+++ b/src/app/ui/collection-tools/examinationQuestions.ts
@@ -392,9 +392,15 @@ export class uploadDisposalNodes {
   ) {}
   @ViewChild("nzTreeComponent", { static: false })
   nzTreeComponent!: NzTreeComponent;
-
+  defaultCheckedKeys = [];
   ngOnInit(): void {
     this.treeData = [...this.data.treeData];
+    let checkedArr = [];
+    // console.log(666, JSON.parse(sessionStorage.getItem("examNodeList")));
+    JSON.parse(sessionStorage.getItem("examNodeList")).forEach((element) => {
+      checkedArr.push(element.id);
+    });
+    this.defaultCheckedKeys = [...checkedArr];
   }
   treeData: any = []; //tree
 
diff --git a/src/app/ui/collection-tools/uploadDisposalNodes.html b/src/app/ui/collection-tools/uploadDisposalNodes.html
index 5b2939a..1a6715e 100644
--- a/src/app/ui/collection-tools/uploadDisposalNodes.html
+++ b/src/app/ui/collection-tools/uploadDisposalNodes.html
@@ -1,7 +1,8 @@
 <div id="disposalNodeTree">
   <div
     style="max-height: 500px;overflow-x: hidden;overflow-y: auto;margin-bottom: 25px;width: 330px;padding-right: 10px;">
-    <nz-tree #nzTreeComponent [nzData]="treeData" nzCheckable nzMultiple [nzTreeTemplate]="nzTreeTemplate"></nz-tree>
+    <nz-tree #nzTreeComponent [nzData]="treeData" nzCheckable nzMultiple [nzTreeTemplate]="nzTreeTemplate"
+      [nzCheckedKeys]="defaultCheckedKeys"></nz-tree>
     <ng-template #nzTreeTemplate let-node let-origin="origin">
       <div id="terrNodePublic">
         <label title="{{node.title}}" class="overflowText textNode">{{node.title}}</label>