diff --git a/flossom-ui/src/views/system/instrumentSerial/index.vue b/flossom-ui/src/views/system/instrumentSerial/index.vue
index 364c8fc..8781f9d 100644
--- a/flossom-ui/src/views/system/instrumentSerial/index.vue
+++ b/flossom-ui/src/views/system/instrumentSerial/index.vue
@@ -45,7 +45,7 @@
           :style="{ width: '100%' }"
           clearable
         >
-          <el-option label="全部" value="" />
+          <el-option label="全部" :value="null" />
           <el-option label="有效" value="1" />
           <el-option label="无效" value="0" />
         </el-select>