diff --git a/nezha-fronted/src/assets/stylus/main.scss b/nezha-fronted/src/assets/stylus/main.scss
index f14bb560a..745e69895 100644
--- a/nezha-fronted/src/assets/stylus/main.scss
+++ b/nezha-fronted/src/assets/stylus/main.scss
@@ -1620,11 +1620,14 @@ li{
   margin-bottom: 0 !important;
 }
 .config-dropdown { /* 若宽度不合适，自行增加新类覆盖宽度 */
-  width: 75px;
+  width: 490px;
 }
 .asset-dropdown {
   width: 370px;
 }
+.threshold-dropdown{
+  width: 75px;
+}
 .asset-dropdown .el-select-dropdown__item {
   position: relative;
 }
diff --git a/nezha-fronted/src/components/common/rightBox/alertConfigBox.vue b/nezha-fronted/src/components/common/rightBox/alertConfigBox.vue
index ef2b5bad4..a9e1c32e2 100644
--- a/nezha-fronted/src/components/common/rightBox/alertConfigBox.vue
+++ b/nezha-fronted/src/components/common/rightBox/alertConfigBox.vue
@@ -33,7 +33,7 @@
         <!--threshold-->
         <el-form-item :label="$t('alert.config.threshold')" prop="threshold" style="display: inline-block;">
           <el-input type="text" placeholder="" v-model="editAlertRule.threshold" size="small" id="alert-box-input-threshold">
-            <el-select popper-class="config-dropdown" v-model="editAlertRule.operator" placeholder=""  size="small" id="alert-box-input-operator" slot="prepend" class="input-with-select">
+            <el-select popper-class="config-dropdown threshold-dropdown" v-model="editAlertRule.operator" placeholder=""  size="small" id="alert-box-input-operator" slot="prepend" class="input-with-select">
               <el-option :id="'operator-'+item.key" v-for="item in operators" :key="item.value" :label="item.label" :value="item.value"></el-option>
             </el-select>
           </el-input>