diff --git a/apps/server/src/models/share-code/share-code.service.ts b/apps/server/src/models/share-code/share-code.service.ts
index 660f184..3a5f2ca 100755
--- a/apps/server/src/models/share-code/share-code.service.ts
+++ b/apps/server/src/models/share-code/share-code.service.ts
@@ -106,24 +106,42 @@ export class ShareCodeService extends BaseService<Prisma.ShareCodeDelegate> {
         throw new NotFoundException('文件不存在');
       }
       const { filename, filetype, size } = resource.meta as any as ResourceMeta
-      // 生成分享码
-      const code = this.generateCode();
-      // 查找是否已有分享码记录
-      const existingShareCode = await super.findUnique({
-        where: { fileId },
-      });
+      // 生成分享码（修改的逻辑保证分享码的唯一性）
+      let code = this.generateCode();
+      let existingShareCode;
+      do {
+        // 查找是否已有相同 shareCode 或者相同 FileID 的分享码记录
+        existingShareCode = await super.findUnique({
+          where: {
+            OR: [
+              { code },
+              { fileId }
+            ]
+          },
+        });
+        // 如果找到的是已经被删除的码，则可以使用并更新其他信息，否则重新生成
+        if (existingShareCode.deleteAt !== null) {
+          break
+        }
+        if (existingShareCode && existingShareCode.code === code) {
+          code = this.generateCode();
+        }
+      } while (existingShareCode && existingShareCode.code === code);
 
       if (existingShareCode) {
         // 更新现有记录，但保留原有文件名
         await super.update({
-          where: { fileId },
+          where: { id: existingShareCode.id },
           data: {
             code,
             expiresAt,
             canUseTimes,
             isUsed: false,
+            fileId,
             fileName: filename || "downloaded_file",
             uploadIp,
+            createdAt: new Date(),
+            deleteAt: null
           },
         });
       } else {
@@ -218,24 +236,25 @@ export class ShareCodeService extends BaseService<Prisma.ShareCodeDelegate> {
         }
       })
       this.logger.log('需要清理的分享码:', shareCodes);
+      //文件资源硬删除
       shareCodes.forEach(code => {
         this.cleanupUploadFolder(code.fileId);
       })
-      const result = await super.deleteMany({
+      //数据库资源软删除
+      const result = await super.softDeleteByIds(
+        [...shareCodes.map(code => code.id)]
+      );
+      const deleteResource = await this.resourceService.updateMany({
         where: {
           fileId: {
             in: shareCodes.map(code => code.fileId)
           }
         },
-      });
-      const deleteResource = await this.resourceService.deleteMany({
-        where: {
-          fileId: {
-            in: shareCodes.map(code => code.fileId)
-          }
+        data:{
+          deletedAt: new Date()
         }
       })
-      this.logger.log(`Cleaned up ${result.count} ${deleteResource.count} expired share codes`);
+      this.logger.log(`Cleaned up ${result} ${deleteResource.count} expired share codes`);
     } catch (error) {
       this.logger.error('Failed to cleanup expired share codes', error);
     }
@@ -576,7 +595,7 @@ export class ShareCodeService extends BaseService<Prisma.ShareCodeDelegate> {
       throw error;
     }
   }
-  
+
   /**
    * 获取分享码列表，使用ShareCodeSelect并按创建时间倒序排序
    * @param args 查询参数