diff --git a/ruoyi-ui/src/views/tool/gen/index.vue b/ruoyi-ui/src/views/tool/gen/index.vue
index cfc4f3783..f800252f7 100644
--- a/ruoyi-ui/src/views/tool/gen/index.vue
+++ b/ruoyi-ui/src/views/tool/gen/index.vue
@@ -301,6 +301,7 @@ export default {
       previewTable(row.tableId).then(response => {
         this.preview.data = response.data;
         this.preview.open = true;
+        this.preview.activeName = "domain.java";
       });
     },
     /** 高亮显示 */