diff --git a/src/views/modules/inventory/label-query.vue b/src/views/modules/inventory/label-query.vue
index c08fe87..342d35f 100644
--- a/src/views/modules/inventory/label-query.vue
+++ b/src/views/modules/inventory/label-query.vue
@@ -298,6 +298,12 @@ export default {
       this.scanRequestSeq += 1;
       const requestSeq = this.scanRequestSeq;
 
+      if (!this.site) {
+        this.loading = false;
+        this.$message.error('缺少工厂，无法查询');
+        return;
+      }
+      // 传登录大工厂。后端按 site_sub 取出全部小工厂，再用小工厂范围查标签。- rqrq
       queryLabelInfo({
         site: this.site,
         labelCode: this.labelCode.trim()