diff --git a/docs/design/api/trade.md b/docs/design/api/trade.md
index b2f642d..1173e26 100644
--- a/docs/design/api/trade.md
+++ b/docs/design/api/trade.md
@@ -33,6 +33,7 @@
 POST /products
 ```
 
+**请求参数**:
 | 字段         | 类型   | 必填 | 说明               |
 |--------------|--------|------|--------------------|
 | name         | string | 是   | 商品名称          |
@@ -40,11 +41,29 @@ POST /products
 | stock        | number | 是   | 库存数量          |
 | category     | string | 是   | 商品分类          |
 
+**响应示例**:
+```json
+{
+  "status": "success",
+  "data": {
+    "product_id": "prod_001",
+    "name": "优质牛肉",
+    "price": 98.5,
+    "stock": 100,
+    "category": "生鲜",
+    "seller_id": "seller_001",
+    "created_at": "2024-01-20T10:00:00Z",
+    "status": "上架中"
+  }
+}
+```
+
 ### 2.2 创建订单
 ```
 POST /orders
 ```
 
+**请求参数**:
 | 字段         | 类型   | 必填 | 说明               |
 |--------------|--------|------|--------------------|
 | product_id   | number | 是   | 商品ID            |
@@ -53,11 +72,65 @@ POST /orders
 | payment_method | string | 是   | 支付方式(微信/支付宝)|
 | coupon_code  | string | 否   | 优惠券码          |
 
+**响应示例**:
+```json
+{
+  "status": "success",
+  "data": {
+    "order_id": "order_001",
+    "product_id": "prod_001",
+    "quantity": 2,
+    "total_amount": 197.0,
+    "discount_amount": 0.0,
+    "final_amount": 197.0,
+    "payment_method": "微信支付",
+    "order_status": "待支付",
+    "created_at": "2024-01-20T10:00:00Z",
+    "payment_expiry": "2024-01-20T10:30:00Z"
+  }
+}
+```
+
 ### 2.3 物流跟踪
 ```
 GET /logistics/:order_id
 ```
 
+**请求参数**:
+| 参数        | 类型   | 必填 | 说明               |
+|-------------|--------|------|--------------------|
+| order_id    | string | 是   | 订单ID             |
+
+**响应示例**:
+```json
+{
+  "status": "success",
+  "data": {
+    "order_id": "order_001",
+    "logistics": [
+      {
+        "tracking_number": "SF1234567890",
+        "status": "已发货",
+        "current_location": "北京市朝阳区",
+        "estimated_delivery": "2024-01-22T10:00:00Z",
+        "history": [
+          {
+            "time": "2024-01-20T10:00:00Z",
+            "status": "商家已接单",
+            "location": "北京市朝阳区"
+          },
+          {
+            "time": "2024-01-20T12:00:00Z", 
+            "status": "已发货",
+            "location": "北京市朝阳区"
+          }
+        ]
+      }
+    ]
+  }
+}
+```
+
 ## 3. 状态流转
 ```mermaid
 stateDiagram