diff --git a/src/main/java/com/ai/da/service/DesignService.java b/src/main/java/com/ai/da/service/DesignService.java
index 3b55f1a4..0964685d 100644
--- a/src/main/java/com/ai/da/service/DesignService.java
+++ b/src/main/java/com/ai/da/service/DesignService.java
@@ -124,4 +124,6 @@ public interface DesignService extends IService<Design> {
     Boolean cloudTaskNameUpdate(CloudTaskDTO cloudTaskDTO);
 
     Boolean cloudTaskDelete(CloudTaskDTO cloudTaskDTO);
+
+    String getAgeGroupByProjectOrCollectionId(Long projectId, Long collectionId);
 }
diff --git a/src/main/java/com/ai/da/service/impl/CollectionElementServiceImpl.java b/src/main/java/com/ai/da/service/impl/CollectionElementServiceImpl.java
index a6f9b0f0..bd02a75a 100644
--- a/src/main/java/com/ai/da/service/impl/CollectionElementServiceImpl.java
+++ b/src/main/java/com/ai/da/service/impl/CollectionElementServiceImpl.java
@@ -358,6 +358,16 @@ public class CollectionElementServiceImpl extends ServiceImpl<CollectionElementM
         if (CollectionUtils.isEmpty(elements)) {
             return Boolean.TRUE;
         }
+        // 根据MD5去重：保留第一个出现的元素，其余重复MD5的丢弃
+        elements = elements.stream()
+                .collect(Collectors.collectingAndThen(
+                        Collectors.toMap(
+                                CollectionElement::getMd5,
+                                e -> e,
+                                (e1, e2) -> e1 // 冲突时保留第一个
+                        ),
+                        map -> new ArrayList<>(map.values())
+                ));
         //获取已存在相同的library
         List<String> md5List = elements.stream().map(CollectionElement::getMd5).collect(Collectors.toList());
         List<Library> existsLibrarys = libraryService.getByMD5List(md5List);
diff --git a/src/main/java/com/ai/da/service/impl/DesignItemServiceImpl.java b/src/main/java/com/ai/da/service/impl/DesignItemServiceImpl.java
index f1b87d72..733e98a4 100644
--- a/src/main/java/com/ai/da/service/impl/DesignItemServiceImpl.java
+++ b/src/main/java/com/ai/da/service/impl/DesignItemServiceImpl.java
@@ -1032,6 +1032,8 @@ public class DesignItemServiceImpl extends ServiceImpl<DesignItemMapper, DesignI
                         library.setLevel1Type(CollectionLevel1TypeEnum.SKETCH_BOARD.getRealName());
                         library.setLevel2Type(designSingleItem.getType());
                         library.setLevel3Type(designSingleIncludeLayersDTO.getGender());
+                        String ageGroup = designService.getAgeGroupByProjectOrCollectionId(designSingleIncludeLayersDTO.getProjectId(), null);
+                        library.setAgeGroup(ageGroup);
                         library.setUrl(designSingleItem.getPath());
                         library.setName(LocalDate.now().format(DateTimeFormatter.ofPattern("yyyyMMdd")));
                         library.setMd5(md5);
diff --git a/src/main/java/com/ai/da/service/impl/DesignServiceImpl.java b/src/main/java/com/ai/da/service/impl/DesignServiceImpl.java
index a18dde82..a25765a3 100644
--- a/src/main/java/com/ai/da/service/impl/DesignServiceImpl.java
+++ b/src/main/java/com/ai/da/service/impl/DesignServiceImpl.java
@@ -419,7 +419,7 @@ public class DesignServiceImpl extends ServiceImpl<DesignMapper, Design> impleme
         return requestId;
     }
 
-    private String getAgeGroupByProjectOrCollectionId(Long projectId, Long collectionId){
+    public String getAgeGroupByProjectOrCollectionId(Long projectId, Long collectionId){
         if (Objects.nonNull(projectId)){
             Workspace workspace = workspaceService.getWSByProjectId(projectId);
             if (workspace != null && !StringUtil.isNullOrEmpty(workspace.getAgeGroup())){
diff --git a/src/main/java/com/ai/da/service/impl/LibraryServiceImpl.java b/src/main/java/com/ai/da/service/impl/LibraryServiceImpl.java
index 8fc315c4..8a9b55e5 100644
--- a/src/main/java/com/ai/da/service/impl/LibraryServiceImpl.java
+++ b/src/main/java/com/ai/da/service/impl/LibraryServiceImpl.java
@@ -789,7 +789,12 @@ public class LibraryServiceImpl extends ServiceImpl<LibraryMapper, Library> impl
             } else {
                 library.setLevel3Type(uploadDTO.getModelSex());
             }
-            library.setAgeGroup(uploadDTO.getAgeGroup());
+            if (uploadDTO.getLevel1Type().equals(LibraryLevel1TypeEnum.SKETCH_BOARD.getRealName())&&StringUtils.isEmpty(uploadDTO.getAgeGroup())) {
+                log.error("前端未传ageGroup");
+                library.setAgeGroup("Adult");
+            } else {
+                library.setAgeGroup(uploadDTO.getAgeGroup());
+            }
             libraryMapper.insert(library);
             return library;
         } else if (uploadDTO.getModelType().equals(ModelType.SYSTEM.getValue())) {