diff --git a/backend/src/main/java/com/qqchen/deploy/backend/deploy/dto/RepositoryProjectDTO.java b/backend/src/main/java/com/qqchen/deploy/backend/deploy/dto/RepositoryProjectDTO.java
index fc10af56..e4998755 100644
--- a/backend/src/main/java/com/qqchen/deploy/backend/deploy/dto/RepositoryProjectDTO.java
+++ b/backend/src/main/java/com/qqchen/deploy/backend/deploy/dto/RepositoryProjectDTO.java
@@ -35,6 +35,8 @@ public class RepositoryProjectDTO extends BaseDTO {
 
     private Long repoGroupId;
 
+    private String repoGroupName;
+
     private Long repoProjectId;
 
     /**
diff --git a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/RepositoryProjectServiceImpl.java b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/RepositoryProjectServiceImpl.java
index 0849523f..5e42e983 100644
--- a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/RepositoryProjectServiceImpl.java
+++ b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/RepositoryProjectServiceImpl.java
@@ -304,17 +304,54 @@ public class RepositoryProjectServiceImpl extends BaseServiceImpl<RepositoryProj
     @Override
     public Page<RepositoryProjectDTO> page(RepositoryProjectQuery query) {
         Page<RepositoryProjectDTO> page = super.page(query);
-        fillBranchCounts(page.getContent());
-        return page;
+        fillExtendedFields(page.getContent());
+        return new PageImpl<>(page.getContent(), page.getPageable(), page.getTotalElements());
     }
 
     @Override
     public List<RepositoryProjectDTO> findAll(RepositoryProjectQuery query) {
         List<RepositoryProjectDTO> list = super.findAll(query);
-        fillBranchCounts(list);
+        fillExtendedFields(list);
         return list;
     }
-    
+
+    /**
+     * 批量填充扩展字段：repoGroupName、branchCount
+     * <p>使用批量查询避免N+1问题
+     */
+    private void fillExtendedFields(List<RepositoryProjectDTO> projects) {
+        if (projects.isEmpty()) {
+            return;
+        }
+
+        // 1. 收集所有仓库组ID
+        Set<Long> repoGroupIds = projects.stream()
+            .map(RepositoryProjectDTO::getRepoGroupId)
+            .filter(id -> id != null)
+            .collect(Collectors.toSet());
+
+        // 2. 批量查询仓库组信息
+        Map<Long, RepositoryGroup> repoGroupMap = Collections.emptyMap();
+        if (!repoGroupIds.isEmpty()) {
+            repoGroupMap = repositoryGroupRepository.findAllById(repoGroupIds).stream()
+                .collect(Collectors.toMap(RepositoryGroup::getId, Function.identity()));
+        }
+
+        // 3. 填充仓库组名称
+        Map<Long, RepositoryGroup> finalRepoGroupMap = repoGroupMap;
+        projects.forEach(project -> {
+            if (project.getRepoGroupId() != null) {
+                RepositoryGroup group = finalRepoGroupMap.get(project.getRepoGroupId());
+                if (group != null) {
+                    project.setRepoGroupName(group.getName());
+                }
+            }
+        });
+
+        // 4. 填充分支数量
+        fillBranchCounts(projects);
+    }
+
     /**
      * 批量填充项目的分支数量（解决N+1查询问题）
      */