diff --git a/src/styles/element-ui.scss b/src/styles/element-ui.scss
index 010d5007..4988153f 100644
--- a/src/styles/element-ui.scss
+++ b/src/styles/element-ui.scss
@@ -31,6 +31,9 @@
    background-color: rgb(98, 157, 209);
    color: white;
  }
+ .el-tree-node__content>.el-tree-node__expand-icon{
+   display: none;
+ }
  .el-table td, .is-leaf{
    background-color: rgb(213, 230, 347);
    color: black;