diff --git a/src/util/func.js b/src/util/func.js
index c347c27..6707725 100644
--- a/src/util/func.js
+++ b/src/util/func.js
@@ -79,7 +79,7 @@ export default class func {
    * @returns {string}
    */
   static join(arr) {
-    return arr ? arr.join(',') : '';
+    return Array.isArray(arr) ? arr.join(',') : arr;
   }
 
   /**
diff --git a/src/views/system/user.vue b/src/views/system/user.vue
index 0b80b91..921d9a8 100644
--- a/src/views/system/user.vue
+++ b/src/views/system/user.vue
@@ -745,9 +745,9 @@
         });
       },
       rowSave(row, done, loading) {
-        row.deptId = row.deptId.join(",");
-        row.roleId = row.roleId.join(",");
-        row.postId = row.postId.join(",");
+        row.deptId = func.join(row.deptId);
+        row.roleId = func.join(row.roleId);
+        row.postId = func.join(row.postId);
         add(row).then(() => {
           this.initFlag = false;
           this.onLoad(this.page);
@@ -762,9 +762,9 @@
         });
       },
       rowUpdate(row, index, done, loading) {
-        row.deptId = row.deptId.join(",");
-        row.roleId = row.roleId.join(",");
-        row.postId = row.postId.join(",");
+        row.deptId = func.join(row.deptId);
+        row.roleId = func.join(row.roleId);
+        row.postId = func.join(row.postId);
         update(row).then(() => {
           this.initFlag = false;
           this.onLoad(this.page);