diff --git a/springboot-web/src/main/java/com/tiesheng/core/controller/ToolController.java b/springboot-web/src/main/java/com/tiesheng/core/controller/ToolController.java
index a428e57..b4ad741 100644
--- a/springboot-web/src/main/java/com/tiesheng/core/controller/ToolController.java
+++ b/springboot-web/src/main/java/com/tiesheng/core/controller/ToolController.java
@@ -108,8 +108,8 @@ public class ToolController {
      */
     @TokenIgnore
     @PostMapping("/file/chunk_merge")
-    public ApiResp<String> fileChunkMerge(String fileMd5) {
-        String path = fileUploadService.chunkMerge(fileMd5);
+    public ApiResp<String> fileChunkMerge(String fileMd5, String fileExt) {
+        String path = fileUploadService.chunkMerge(fileMd5, fileExt);
         return ApiResp.respOK(path);
     }
 
diff --git a/springboot-web/src/main/java/com/tiesheng/core/service/FileUploadService.java b/springboot-web/src/main/java/com/tiesheng/core/service/FileUploadService.java
index e7de5aa..c72945f 100644
--- a/springboot-web/src/main/java/com/tiesheng/core/service/FileUploadService.java
+++ b/springboot-web/src/main/java/com/tiesheng/core/service/FileUploadService.java
@@ -40,7 +40,7 @@ public class FileUploadService {
             String fileType = FileTypeUtil.getType(file.getInputStream(), file.getOriginalFilename());
             tieshengWebConfigurer.uploadFileCheck(fileType);
 
-            FileUploadPath filePath = FileUploadPath.random();
+            FileUploadPath filePath = FileUploadPath.random(fileType);
 
             InputStream stream = file.getInputStream();
             FileUtil.writeFromStream(stream, filePath.getAbsolutePath());
@@ -107,7 +107,7 @@ public class FileUploadService {
      *
      * @param fileMd5
      */
-    public String chunkMerge(String fileMd5) {
+    public String chunkMerge(String fileMd5, String fileExt) {
 
         // 1，获取文件块的目录
         FileUploadPath folder = FileUploadPath.folder(fileMd5);
@@ -118,7 +118,7 @@ public class FileUploadService {
         }
 
         // 3，生成保存文件的路径
-        FileUploadPath uploadPath = FileUploadPath.random();
+        FileUploadPath uploadPath = FileUploadPath.random(fileExt);
 
         // 4，获取块文件，此列表是已经排好序的列表
         List<File> chunkFiles = getSortedChunkFiles(new File(folder.getAbsolutePath()));