diff --git a/src/views/system/user/index.vue b/src/views/system/user/index.vue
index aa2315b5..2a76d838 100644
--- a/src/views/system/user/index.vue
+++ b/src/views/system/user/index.vue
@@ -767,6 +767,16 @@ function fnGetDeptTree() {
   });
 }
 
+/**选择指定只能一个 */
+function fnSelectOne(v: string, type: string) {
+  if (type === 'postId') {
+    modalState.from.postIds = [v];
+  }
+  if (type === 'roleId') {
+    modalState.from.roleIds = [v];
+  }
+}
+
 onMounted(() => {
   // 初始字典数据
   Promise.allSettled([
@@ -1355,6 +1365,7 @@ onMounted(() => {
                 :options="modalState.options.posts"
                 :field-names="{ label: 'postName', value: 'postId' }"
                 :placeholder="t('common.selectPlease')"
+                @select="(value:any) => fnSelectOne(value, 'postId')"
               >
               </a-select>
             </a-form-item>
@@ -1441,6 +1452,7 @@ onMounted(() => {
             :options="modalState.options.roles"
             :field-names="{ label: 'roleName', value: 'roleId' }"
             :placeholder="t('common.selectPlease')"
+            @select="(value:any) => fnSelectOne(value, 'roleId')"
           >
           </a-select>
         </a-form-item>