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 04af4d86..2c0ef9ef 100644
--- a/src/main/java/com/ai/da/service/impl/LibraryServiceImpl.java
+++ b/src/main/java/com/ai/da/service/impl/LibraryServiceImpl.java
@@ -174,26 +174,37 @@ public class LibraryServiceImpl extends ServiceImpl<LibraryMapper, Library> impl
                 throw new BusinessException("unknown level1_type");
         }
         //保存element元素
-        if (libraryUploadDTO.getModelType().equals(ModelType.LIBRARY.getValue())) {
+        if (libraryUploadDTO.getModelType() != null) {
+            if (libraryUploadDTO.getModelType().equals(ModelType.LIBRARY.getValue())) {
+                String filePath = minioUtil.upload(bucketName, path, libraryUploadDTO.getFile());
+                String newFilePath = processMannequins(filePath);
+                Library library = resolveData(libraryUploadDTO, userInfo, newFilePath);
+                LibraryUpdateVo libraryUpdateVo = CopyUtil.copyObject(library, LibraryUpdateVo.class);
+                libraryUpdateVo.setMinIOPath(libraryUpdateVo.getUrl());
+                libraryUpdateVo.setUrl(minioUtil.getPresignedUrl(newFilePath, 480));
+                return libraryUpdateVo;
+            }else if (libraryUploadDTO.getModelType().equals(ModelType.SYSTEM.getValue())) {
+                bucketName = "aida-sys-image";
+                path = "models/" + libraryUploadDTO.getModelSex();
+                String filePath = minioUtil.upload(bucketName, path, libraryUploadDTO.getFile());
+                String newFilePath = processMannequins(filePath);
+                Library library = resolveData(libraryUploadDTO, userInfo, newFilePath);
+                LibraryUpdateVo libraryUpdateVo = CopyUtil.copyObject(library, LibraryUpdateVo.class);
+                libraryUpdateVo.setMinIOPath(libraryUpdateVo.getUrl());
+                libraryUpdateVo.setUrl(minioUtil.getPresignedUrl(newFilePath, 480));
+                return libraryUpdateVo;
+            }else {
+                throw new BusinessException("unknown modelType");
+            }
+        }else {
             String filePath = minioUtil.upload(bucketName, path, libraryUploadDTO.getFile());
-            String newFilePath = bucketName + "/" + processMannequins(filePath);
-            Library library = resolveData(libraryUploadDTO, userInfo, newFilePath);
+            //保存element元素
+            Library library = resolveData(libraryUploadDTO, userInfo, filePath);
             LibraryUpdateVo libraryUpdateVo = CopyUtil.copyObject(library, LibraryUpdateVo.class);
             libraryUpdateVo.setMinIOPath(libraryUpdateVo.getUrl());
-            libraryUpdateVo.setUrl(minioUtil.getPresignedUrl(newFilePath, 480));
-            return libraryUpdateVo;
-        }else if (libraryUploadDTO.getModelType().equals(ModelType.SYSTEM.getValue())) {
-            bucketName = "aida-sys-image";
-            path = "models/" + libraryUploadDTO.getModelSex();
-            String filePath = minioUtil.upload(bucketName, path, libraryUploadDTO.getFile());
-            String newFilePath = bucketName + "/" + processMannequins(filePath);
-            Library library = resolveData(libraryUploadDTO, userInfo, newFilePath);
-            LibraryUpdateVo libraryUpdateVo = CopyUtil.copyObject(library, LibraryUpdateVo.class);
-            libraryUpdateVo.setMinIOPath(libraryUpdateVo.getUrl());
-            libraryUpdateVo.setUrl(minioUtil.getPresignedUrl(newFilePath, 480));
+            libraryUpdateVo.setUrl(minioUtil.getPresignedUrl(libraryUpdateVo.getUrl(), 480));
             return libraryUpdateVo;
         }
-        return null;
     }
 
     private String processMannequins(String filePath) {
@@ -244,7 +255,7 @@ public class LibraryServiceImpl extends ServiceImpl<LibraryMapper, Library> impl
     }
 
     private Library resolveData(LibraryUploadDTO uploadDTO, AuthPrincipalVo userInfo, String filePath) {
-        if (uploadDTO.getModelType().equals(ModelType.LIBRARY.getValue())) {
+        if (StringUtils.isEmpty(uploadDTO.getModelType()) || uploadDTO.getModelType().equals(ModelType.LIBRARY.getValue())) {
             Library library = CopyUtil.copyObject(uploadDTO, Library.class);
             library.setAccountId(userInfo.getId());
             library.setName(DateUtil.dateToStr(new Date(),DateUtil.YYYY_MM_DD));
@@ -275,7 +286,7 @@ public class LibraryServiceImpl extends ServiceImpl<LibraryMapper, Library> impl
             library.setUrl(sysFile.getUrl());
             return library;
         }else {
-            throw new BusinessException("unknown model type");
+            throw new BusinessException("system error!");
         }
     }