diff --git a/src/components/DeviceList.vue b/src/components/DeviceList.vue
index 26fd5b1a..6a97d154 100644
--- a/src/components/DeviceList.vue
+++ b/src/components/DeviceList.vue
@@ -36,6 +36,7 @@
         row-key="id"
         default-expand-all
         :tree-props="{ children: 'children', hasChildren: 'hasChildren' }">
+        <el-table-column width="40"></el-table-column>
         <el-table-column prop="id" label="设备ID" min-width="80" />
         <el-table-column prop="name" label="设备名称" min-width="120" />
         <el-table-column prop="type" label="设备类型" min-width="100">