diff --git a/epmet-module/gov-issue/gov-issue-server/src/main/java/com/epmet/service/impl/IssueProjectCategoryDictServiceImpl.java b/epmet-module/gov-issue/gov-issue-server/src/main/java/com/epmet/service/impl/IssueProjectCategoryDictServiceImpl.java
index 6e61017ed1..9236ff80a5 100644
--- a/epmet-module/gov-issue/gov-issue-server/src/main/java/com/epmet/service/impl/IssueProjectCategoryDictServiceImpl.java
+++ b/epmet-module/gov-issue/gov-issue-server/src/main/java/com/epmet/service/impl/IssueProjectCategoryDictServiceImpl.java
@@ -503,15 +503,15 @@ public class IssueProjectCategoryDictServiceImpl extends BaseServiceImpl<IssuePr
      * @date 2021/5/17 2:16 下午
      */
     public String disposeCategory(List<ProjectCategoryDisPoseResultDTO> list){
-        String result = "";
+        StringBuilder r = new StringBuilder();
         if (!CollectionUtils.isEmpty(list)){
             list.forEach(l -> {
-                result.concat(l.getCategoryName()).concat(",");
+                r.append(l.getCategoryName()).append(",");
             });
         }
-        if (StringUtils.isEmpty(result)){
-            return result;
+        if (StringUtils.isEmpty(r.toString())){
+            return r.toString();
         }
-        return result.substring(NumConstant.ZERO,result.length()-NumConstant.ONE);
+        return r.toString().substring(NumConstant.ZERO,r.length()-NumConstant.ONE);
     }
 }