diff --git a/ruoyi-admin/src/main/java/com/ruoyi/web/controller/jarvis/ErpOpenConfigController.java b/ruoyi-admin/src/main/java/com/ruoyi/web/controller/jarvis/ErpOpenConfigController.java
index e427345..42094e5 100644
--- a/ruoyi-admin/src/main/java/com/ruoyi/web/controller/jarvis/ErpOpenConfigController.java
+++ b/ruoyi-admin/src/main/java/com/ruoyi/web/controller/jarvis/ErpOpenConfigController.java
@@ -5,8 +5,12 @@ import com.ruoyi.common.core.controller.BaseController;
 import com.ruoyi.common.core.domain.AjaxResult;
 import com.ruoyi.common.core.page.TableDataInfo;
 import com.ruoyi.common.enums.BusinessType;
+import com.alibaba.fastjson2.JSONObject;
+import com.ruoyi.erp.request.ExpressCompaniesQueryRequest;
+import com.ruoyi.erp.request.IERPAccount;
 import com.ruoyi.jarvis.domain.ErpOpenConfig;
 import com.ruoyi.jarvis.service.IErpOpenConfigService;
+import com.ruoyi.jarvis.service.erp.ErpAccountResolver;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.web.bind.annotation.*;
 
@@ -20,6 +24,34 @@ public class ErpOpenConfigController extends BaseController {
     @Resource
     private IErpOpenConfigService erpOpenConfigService;
 
+    @Resource
+    private ErpAccountResolver erpAccountResolver;
+
+    /**
+     * 查询闲管家快递公司列表（POST body 固定为 {}，与签名规则一致）
+     *
+     * @param appKey 与配置中心一致；不传则按 {@link ErpAccountResolver#resolve(String)} 默认账号
+     */
+    @PreAuthorize("@ss.hasPermi('jarvis:erpOpenConfig:list')")
+    @GetMapping("/expressCompanies")
+    public AjaxResult expressCompanies(@RequestParam(required = false) String appKey) {
+        try {
+            IERPAccount cred = erpAccountResolver.resolve(appKey);
+            ExpressCompaniesQueryRequest req = new ExpressCompaniesQueryRequest(cred);
+            String resp = req.getResponseBody();
+            JSONObject o = JSONObject.parseObject(resp);
+            if (o == null) {
+                return AjaxResult.error("开放平台返回空");
+            }
+            if (o.getIntValue("code") != 0) {
+                return AjaxResult.error(o.getString("msg") != null ? o.getString("msg") : resp);
+            }
+            return AjaxResult.success(o.get("data"));
+        } catch (Exception e) {
+            return AjaxResult.error("调用快递公司接口失败: " + e.getMessage());
+        }
+    }
+
     @PreAuthorize("@ss.hasPermi('jarvis:erpOpenConfig:list')")
     @GetMapping("/list")
     public TableDataInfo list(ErpOpenConfig query) {
diff --git a/ruoyi-admin/src/main/resources/sql/erp_goofish_init.sql b/ruoyi-admin/src/main/resources/sql/erp_goofish_init.sql
index b923b79..225b2ae 100644
--- a/ruoyi-admin/src/main/resources/sql/erp_goofish_init.sql
+++ b/ruoyi-admin/src/main/resources/sql/erp_goofish_init.sql
@@ -8,7 +8,7 @@ CREATE TABLE IF NOT EXISTS erp_open_config (
   app_key         varchar(64)  NOT NULL COMMENT '开放平台 AppKey(appid)',
   app_secret      varchar(128) NOT NULL COMMENT '开放平台 AppSecret',
   xy_user_name    varchar(128)          DEFAULT NULL COMMENT '默认闲鱼会员名（展示）',
-  express_code    varchar(64)           DEFAULT NULL COMMENT '发货用快递公司编码（日日顺，以开放平台「查询快递公司」为准）',
+  express_code    varchar(64)           DEFAULT NULL COMMENT '发货用快递公司编码（日日顺物流在官方列表中为 rrs，以「查询快递公司」接口为准）',
   express_name    varchar(64)           DEFAULT NULL COMMENT '快递公司名称（展示）',
   status          char(1)      NOT NULL DEFAULT '0' COMMENT '0正常 1停用',
   order_num       int(11)      NOT NULL DEFAULT 0 COMMENT '排序（小优先）',
diff --git a/ruoyi-system/src/main/java/com/ruoyi/erp/request/ExpressCompaniesQueryRequest.java b/ruoyi-system/src/main/java/com/ruoyi/erp/request/ExpressCompaniesQueryRequest.java
index f842724..e2254d1 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/erp/request/ExpressCompaniesQueryRequest.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/erp/request/ExpressCompaniesQueryRequest.java
@@ -1,13 +1,18 @@
 package com.ruoyi.erp.request;
 
+import com.alibaba.fastjson2.JSONObject;
+
 /**
  * 查询快递公司请求
- *
- * 对应接口：POST /api/open/express/companies
+ * <p>
+ * 对应接口：POST /api/open/express/companies<br>
+ * 闲管家规定：无业务参数时应对 <strong>空 JSON 对象</strong> 做 {@code md5("{}")}，且 POST 原文必须与之一致；
+ * Apifox 调试时请勿留空 body，须填 {@code {}}，否则签名与平台不一致会拉不到数据。
  */
 public class ExpressCompaniesQueryRequest extends ERPRequestBase {
 	public ExpressCompaniesQueryRequest(IERPAccount erpAccount) {
 		super("https://open.goofish.pro/api/open/express/companies", erpAccount);
+		this.requestBody = new JSONObject();
 	}
 }