diff --git a/src/components/jerobiz/modal/JSelectDepartModal.vue b/src/components/jerobiz/modal/JSelectDepartModal.vue
index bb215e3e..4583d0fc 100644
--- a/src/components/jerobiz/modal/JSelectDepartModal.vue
+++ b/src/components/jerobiz/modal/JSelectDepartModal.vue
@@ -304,9 +304,39 @@ export default {
       }
       return rows
     },
+    // 获取currKeys及其子节点
+    getChildrenTreeData (currKeys, treeData) {
+      const childrenKeys = []
+      for (let i = 0; i < treeData.length; i++) {
+        if (currKeys.includes(treeData[i].key)) {
+          childrenKeys.push(treeData[i].key)
+          if (treeData[i].children) {
+            const childrenKeysArr = this.getChildrenKeys(treeData[i].children)
+            childrenKeys.push(...childrenKeysArr)
+          }
+        }
+        if (treeData[i].children) {
+          childrenKeys.push(...this.getChildrenTreeData(currKeys, treeData[i].children))
+        }
+      }
+      return childrenKeys
+    },
+    // 把传入的树结构key值全部存成一个数组
+    getChildrenKeys (treeData) {
+      const arr = []
+      for (const item of treeData) {
+        arr.push(item.key)
+        if (item.children) {
+          arr.push(...this.getChildrenKeys(item.children))
+        }
+      }
+      return arr
+    },
     switchCheckStrictly (v) {
       if (v === 1) {
         this.checkStrictly = false
+        this.checkedKeys = this.getChildrenTreeData(this.checkedKeys, this.treeData)
+        this.checkedRows = this.getCheckedRows(this.checkedKeys)
       } else if (v === 2) {
         this.checkStrictly = true
       }