diff --git a/src/main/java/com/bruce/common/controller/SysAttachmentController.java b/src/main/java/com/bruce/common/controller/SysAttachmentController.java
index 360e4bc..5ecc8da 100644
--- a/src/main/java/com/bruce/common/controller/SysAttachmentController.java
+++ b/src/main/java/com/bruce/common/controller/SysAttachmentController.java
@@ -1,15 +1,16 @@
 package com.bruce.common.controller;
 
-import com.bruce.common.entity.SysAttachment;
+import com.bruce.common.domain.entity.SysAttachment;
+import com.bruce.common.domain.model.RequestResult;
+import com.bruce.common.dto.request.SysAttachmentUploadRequest;
 import com.bruce.common.service.ISysAttachmentService;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
-import org.springframework.web.multipart.MultipartFile;
 
 @Tag(name = "系统附件管理")
 @RestController
@@ -21,9 +22,7 @@ public class SysAttachmentController {
 
     @Operation(summary = "上传附件")
     @PostMapping("/upload")
-    public SysAttachment upload(@RequestParam("file") MultipartFile file,
-                                @RequestParam String sourceType,
-                                @RequestParam(required = false) Long sourceId) {
-        return sysAttachmentService.upload(file, sourceType, sourceId);
+    public RequestResult<SysAttachment> upload(@ModelAttribute SysAttachmentUploadRequest request) {
+        return RequestResult.success(sysAttachmentService.upload(request));
     }
 }
diff --git a/src/main/java/com/bruce/common/dto/request/SysAttachmentUploadRequest.java b/src/main/java/com/bruce/common/dto/request/SysAttachmentUploadRequest.java
new file mode 100644
index 0000000..1e8877c
--- /dev/null
+++ b/src/main/java/com/bruce/common/dto/request/SysAttachmentUploadRequest.java
@@ -0,0 +1,19 @@
+package com.bruce.common.dto.request;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+import org.springframework.web.multipart.MultipartFile;
+
+@Data
+@Schema(description = "附件上传请求")
+public class SysAttachmentUploadRequest {
+
+    @Schema(description = "上传文件")
+    private MultipartFile file;
+
+    @Schema(description = "来源类型")
+    private String sourceType;
+
+    @Schema(description = "来源业务ID")
+    private Long sourceId;
+}
diff --git a/src/main/java/com/bruce/common/service/ISysAttachmentService.java b/src/main/java/com/bruce/common/service/ISysAttachmentService.java
index 0d226a9..0bc4f13 100644
--- a/src/main/java/com/bruce/common/service/ISysAttachmentService.java
+++ b/src/main/java/com/bruce/common/service/ISysAttachmentService.java
@@ -1,10 +1,10 @@
 package com.bruce.common.service;
 
 import com.baomidou.mybatisplus.extension.service.IService;
-import com.bruce.common.entity.SysAttachment;
-import org.springframework.web.multipart.MultipartFile;
+import com.bruce.common.domain.entity.SysAttachment;
+import com.bruce.common.dto.request.SysAttachmentUploadRequest;
 
 public interface ISysAttachmentService extends IService<SysAttachment> {
 
-    SysAttachment upload(MultipartFile file, String sourceType, Long sourceId);
+    SysAttachment upload(SysAttachmentUploadRequest request);
 }
diff --git a/src/main/java/com/bruce/common/service/impl/SysAttachmentServiceImpl.java b/src/main/java/com/bruce/common/service/impl/SysAttachmentServiceImpl.java
index c1b6940..b9fe4b6 100644
--- a/src/main/java/com/bruce/common/service/impl/SysAttachmentServiceImpl.java
+++ b/src/main/java/com/bruce/common/service/impl/SysAttachmentServiceImpl.java
@@ -2,7 +2,8 @@ package com.bruce.common.service.impl;
 
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.bruce.common.config.AttachmentProperties;
-import com.bruce.common.entity.SysAttachment;
+import com.bruce.common.domain.entity.SysAttachment;
+import com.bruce.common.dto.request.SysAttachmentUploadRequest;
 import com.bruce.common.mapper.SysAttachmentMapper;
 import com.bruce.common.service.ISysAttachmentService;
 import org.springframework.stereotype.Service;
@@ -29,10 +30,15 @@ public class SysAttachmentServiceImpl extends ServiceImpl<SysAttachmentMapper, S
     }
 
     @Override
-    public SysAttachment upload(MultipartFile file, String sourceType, Long sourceId) {
+    public SysAttachment upload(SysAttachmentUploadRequest request) {
+        if (request == null) {
+            throw new IllegalArgumentException("上传请求不能为空");
+        }
+        MultipartFile file = request.getFile();
         if (file == null || file.isEmpty()) {
             throw new IllegalArgumentException("上传文件不能为空");
         }
+        String sourceType = request.getSourceType();
         if (!StringUtils.hasText(sourceType)) {
             throw new IllegalArgumentException("sourceType不能为空");
         }
@@ -54,7 +60,7 @@ public class SysAttachmentServiceImpl extends ServiceImpl<SysAttachmentMapper, S
 
         SysAttachment attachment = new SysAttachment();
         attachment.setSourceType(sourceType);
-        attachment.setSourceId(sourceId);
+        attachment.setSourceId(request.getSourceId());
         attachment.setOriginalName(originalName);
         attachment.setFileName(storedFileName);
         attachment.setFileSuffix(suffix);
diff --git a/src/test/java/com/bruce/common/attachment/SysAttachmentComponentStructureTests.java b/src/test/java/com/bruce/common/attachment/SysAttachmentComponentStructureTests.java
index f19e802..12e8e4f 100644
--- a/src/test/java/com/bruce/common/attachment/SysAttachmentComponentStructureTests.java
+++ b/src/test/java/com/bruce/common/attachment/SysAttachmentComponentStructureTests.java
@@ -4,15 +4,17 @@ import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.baomidou.mybatisplus.extension.service.IService;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.bruce.common.controller.SysAttachmentController;
-import com.bruce.common.entity.SysAttachment;
+import com.bruce.common.domain.model.RequestResult;
+import com.bruce.common.dto.request.SysAttachmentUploadRequest;
+import com.bruce.common.domain.entity.SysAttachment;
 import com.bruce.common.mapper.SysAttachmentMapper;
 import com.bruce.common.service.ISysAttachmentService;
 import com.bruce.common.service.impl.SysAttachmentServiceImpl;
 import org.junit.jupiter.api.Test;
-import org.springframework.web.multipart.MultipartFile;
 
 import java.lang.reflect.Method;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
@@ -31,18 +33,16 @@ class SysAttachmentComponentStructureTests {
     void sysAttachmentShouldExposeUploadMethods() throws NoSuchMethodException {
         Method serviceMethod = ISysAttachmentService.class.getMethod(
                 "upload",
-                MultipartFile.class,
-                String.class,
-                Long.class
+                SysAttachmentUploadRequest.class
         );
         Method controllerMethod = SysAttachmentController.class.getMethod(
                 "upload",
-                MultipartFile.class,
-                String.class,
-                Long.class
+                SysAttachmentUploadRequest.class
         );
 
         assertNotNull(serviceMethod);
         assertNotNull(controllerMethod);
+        assertEquals(SysAttachment.class, serviceMethod.getReturnType());
+        assertEquals(RequestResult.class, controllerMethod.getReturnType());
     }
 }