diff --git a/src/pages/regulatoryRepository/domesticStandardsAndRegulations/index.vue b/src/pages/regulatoryRepository/domesticStandardsAndRegulations/index.vue
index 3466fe04a..401b481e6 100644
--- a/src/pages/regulatoryRepository/domesticStandardsAndRegulations/index.vue
+++ b/src/pages/regulatoryRepository/domesticStandardsAndRegulations/index.vue
@@ -5690,7 +5690,7 @@ export default {
 
   .tree-content {
     background: #fff;
-    width: 20%;
+    width: 16%;
     position: relative;
 
     .tree {