diff --git a/psdc-ui/src/views/system/device/index.vue b/psdc-ui/src/views/system/device/index.vue
index 83f54df..fea35c5 100644
--- a/psdc-ui/src/views/system/device/index.vue
+++ b/psdc-ui/src/views/system/device/index.vue
@@ -5,7 +5,7 @@
         <el-form :model="queryParams" ref="queryRef" :inline="true" label-width="88px">
           <el-form-item label="模型名称:" prop="name">
             <el-select v-model="data.sceneCode" placeholder="请选择" style="width: 240px" @change="changeSl">
-              <el-option label='所有' value=''  />
+              <el-option label='所有' :value='null'  />
               <el-option :label='item.label' :value='item.value'  :key="item.value" v-for="item in queryParams"/>
             </el-select>
           </el-form-item>
@@ -303,7 +303,7 @@ const data = reactive({
     "deviceId": 0,
     "deviceModel": "温度传感器"
   },
-  sceneCode:'',
+  sceneCode:null,
   dateRange:[],
 });
 const { queryParams1, form, rules } = toRefs(data);
@@ -355,13 +355,13 @@ function handleQuery(){
 }
 //重置按钮
 function resetQuery(){
-  data.sceneCode=0
+  data.sceneCode=null
   currentPage.value=1
   pageSize.value=10
   getSbTab({
     "deviceId":0,
 
-    "deviceModel":'',
+    "deviceModel":null,
 
     "pageNum": currentPage.value,
 
@@ -506,7 +506,7 @@ function handleExport() {
   proxy.download("system/device/index/daochuDevs", {
     ...JSON.stringify({
       "deviceId": 0,
-      "deviceModel": "温度传感器"
+      "deviceModel": null
     }),
   },`device_${new Date().getTime()}.xlsx`);
 };