diff --git a/packages/tree/src/model/node.js b/packages/tree/src/model/node.js
index 8e62a709de8..85ffa388bd0 100644
--- a/packages/tree/src/model/node.js
+++ b/packages/tree/src/model/node.js
@@ -465,7 +465,6 @@ export default class Node {
         this.doCreateChildren(children, defaultProps);
 
         this.updateLeafState();
-        reInitChecked(this);
         if (callback) {
           callback.call(this, children);
         }
diff --git a/test/unit/specs/tree.spec.js b/test/unit/specs/tree.spec.js
index 6ff531252fe..b92038fd2dd 100644
--- a/test/unit/specs/tree.spec.js
+++ b/test/unit/specs/tree.spec.js
@@ -299,36 +299,6 @@ describe('Tree', () => {
     expect(vm.$el.querySelectorAll('.el-checkbox .is-checked').length).to.equal(1);
   });
 
-  it('defaultCheckedKeys & lazy, checked children length as expected', () => {
-    vm = getTreeVm(':load="loadNode" :props="defaultProps" :default-checked-keys="defaultCheckedKeys" node-key="id" :default-expanded-keys="[1]" lazy show-checkbox ', {
-      created() {
-        this.defaultCheckedKeys = [2, 3];
-      },
-      methods: {
-        loadNode(node, resolve) {
-          if (node.level === 0) {
-            return resolve([{ label: 'head', id: 1} ]);
-          }
-          return resolve([
-            {
-              label: '#1',
-              id: 2
-            },
-            {
-              label: '#3',
-              id: 3
-            },
-            {
-              label: '$4',
-              id: 5
-            }
-          ]);
-        }
-      }
-    });
-    expect(vm.$el.querySelectorAll('.el-checkbox.is-checked').length).to.equal(2);
-  });
-
   it('show checkbox', done => {
     vm = getTreeVm(':props="defaultProps" show-checkbox');
     const tree = vm.$children[0];