diff --git a/src/components/DesignForm/public/expand/rangedUserTree.vue b/src/components/DesignForm/public/expand/rangedUserTree.vue
index 05fc96e..eac4dfc 100644
--- a/src/components/DesignForm/public/expand/rangedUserTree.vue
+++ b/src/components/DesignForm/public/expand/rangedUserTree.vue
@@ -305,4 +305,10 @@ function hasNodesInTree(tree) {
     color: #909399;
     font-size: 14px;
 }
+
+.el-select-dropdown__item.is-disabled {
+    background-color: unset;
+    color: #606266;
+    cursor: not-allowed;
+}
 </style>
\ No newline at end of file