diff --git a/docs/openapi.yaml b/docs/openapi.yaml
index 13e1289..4e5dbd0 100644
--- a/docs/openapi.yaml
+++ b/docs/openapi.yaml
@@ -42,7 +42,7 @@ paths:
                 code: 0
                 msg: "success"
                 data:
-                  url: "/api/docx/download?id=d8d4122719c8465ea75ab62b37f6ce10"
+                  url: "http://localhost:6666/api/docx/download?id=d8d4122719c8465ea75ab62b37f6ce10"
                   fileName: "annualReport.docx"
         "400":
           description: 参数校验失败（exportId 为空 / businessData 为空）
@@ -175,8 +175,9 @@ components:
       properties:
         url:
           type: string
-          description: 文件下载路径（pathname only，无 origin）
-          example: "/api/docx/download?id=d8d4122719c8465ea75ab62b37f6ce10"
+          format: uri
+          description: 文件下载 URL（由 gmp.download-origin 配置 + 路径组成，未配置则只返回路径）
+          example: "http://localhost:6666/api/docx/download?id=d8d4122719c8465ea75ab62b37f6ce10"
         fileName:
           type: string
           description: 文件名
diff --git a/src/main/java/com/gmp/mock/controller/DocxController.java b/src/main/java/com/gmp/mock/controller/DocxController.java
index c892730..3cfbcd3 100644
--- a/src/main/java/com/gmp/mock/controller/DocxController.java
+++ b/src/main/java/com/gmp/mock/controller/DocxController.java
@@ -2,6 +2,7 @@ package com.gmp.mock.controller;
 
 import jakarta.validation.Valid;
 
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -26,10 +27,13 @@ public class DocxController {
 
     private final DocxService docxService;
     private final FileCacheService fileCache;
+    private final String downloadOrigin;
 
-    public DocxController(DocxService docxService, FileCacheService fileCache) {
+    public DocxController(DocxService docxService, FileCacheService fileCache,
+                          @Value("${gmp.download-origin:}") String downloadOrigin) {
         this.docxService = docxService;
         this.fileCache = fileCache;
+        this.downloadOrigin = downloadOrigin;
     }
 
     /**
@@ -51,7 +55,9 @@ public class DocxController {
     ) {
         CachedResult result = docxService.export(request.getExportId(), request.getBusinessData());
 
-        String url = "/api/docx/download?id=" + result.key();
+        String url = downloadOrigin.isBlank()
+                ? "/api/docx/download?id=" + result.key()
+                : downloadOrigin + "/api/docx/download?id=" + result.key();
 
         ExportResultData data = new ExportResultData(url, result.fileName());
         return ResponseEntity.ok(ApiResponse.ok(data));
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 9a00a0f..e39ef9f 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -4,3 +4,6 @@ server:
 spring:
   application:
     name: gmp-mock-service
+
+gmp:
+  download-origin: http://193.112.146.124:6666