diff --git a/docs/PAYMENT.md b/docs/PAYMENT.md
index c0fc1fdc..accd4a98 100644
--- a/docs/PAYMENT.md
+++ b/docs/PAYMENT.md
@@ -90,6 +90,8 @@ Prevents users from repeatedly creating and canceling orders:
 
 Each provider type requires different credentials. Select the type when adding a new provider instance in **Provider Management → Add Provider**.
 
+> **Callback URLs are auto-generated**: When adding a provider, the Notify URL and Return URL are automatically constructed from your site domain. You only need to confirm the domain is correct.
+
 ### EasyPay
 
 Compatible with any payment service that implements the EasyPay protocol.
@@ -99,8 +101,6 @@ Compatible with any payment service that implements the EasyPay protocol.
 | **Merchant ID (PID)** | EasyPay merchant ID | Yes |
 | **Merchant Key (PKey)** | EasyPay merchant secret key | Yes |
 | **API Base URL** | EasyPay API base address | Yes |
-| **Notify URL** | Async callback URL for payment success | Yes |
-| **Return URL** | Redirect URL after payment completion | No |
 | **Alipay Channel ID** | Specify Alipay channel (optional) | No |
 | **WeChat Channel ID** | Specify WeChat channel (optional) | No |
 
@@ -113,8 +113,6 @@ Direct integration with Alipay Open Platform. Supports PC page pay and H5 mobile
 | **AppID** | Alipay application AppID | Yes |
 | **Private Key** | RSA2 application private key | Yes |
 | **Alipay Public Key** | Alipay public key | Yes |
-| **Notify URL** | Async callback URL | Yes |
-| **Return URL** | Redirect URL after payment | No |
 
 ### WeChat Pay (Direct)
 
@@ -125,11 +123,10 @@ Direct integration with WeChat Pay APIv3. Supports Native QR code and H5 payment
 | **AppID** | WeChat Pay AppID | Yes |
 | **Merchant ID (MchID)** | WeChat Pay merchant ID | Yes |
 | **Merchant API Private Key** | Merchant API private key (PEM format) | Yes |
-| **Certificate Serial Number** | Merchant certificate serial number | Yes |
 | **APIv3 Key** | 32-byte APIv3 key | Yes |
 | **WeChat Pay Public Key** | WeChat Pay public key (PEM format) | Yes |
-| **WeChat Pay Public Key ID** | WeChat Pay public key ID | Yes |
-| **Notify URL** | Async callback URL | Yes |
+| **WeChat Pay Public Key ID** | WeChat Pay public key ID | No |
+| **Certificate Serial Number** | Merchant certificate serial number | No |
 
 ### Stripe
 
@@ -174,14 +171,16 @@ Payment callbacks are essential for the payment system to work correctly.
 
 ### Callback URL Format
 
-| Provider | Callback URL |
-|----------|-------------|
-| **EasyPay** | `https://your-domain.com/api/v1/payment/easypay/notify` |
-| **Alipay (Direct)** | `https://your-domain.com/api/v1/payment/alipay/notify` |
-| **WeChat Pay (Direct)** | `https://your-domain.com/api/v1/payment/wxpay/notify` |
-| **Stripe** | `https://your-domain.com/api/v1/payment/stripe/webhook` |
+When adding a provider, the system auto-generates callback URLs from your site domain:
 
-> Replace `your-domain.com` with your actual domain.
+| Provider | Callback Path |
+|----------|-------------|
+| **EasyPay** | `https://your-domain.com/api/v1/payment/webhook/easypay` |
+| **Alipay (Direct)** | `https://your-domain.com/api/v1/payment/webhook/alipay` |
+| **WeChat Pay (Direct)** | `https://your-domain.com/api/v1/payment/webhook/wxpay` |
+| **Stripe** | `https://your-domain.com/api/v1/payment/webhook/stripe` |
+
+> Replace `your-domain.com` with your actual domain. For EasyPay / Alipay / WeChat Pay, the callback URL is auto-filled when adding the provider — no manual configuration needed.
 
 ### Stripe Webhook Setup
 
diff --git a/docs/PAYMENT_CN.md b/docs/PAYMENT_CN.md
index 33a5ace3..2d0371bd 100644
--- a/docs/PAYMENT_CN.md
+++ b/docs/PAYMENT_CN.md
@@ -90,6 +90,8 @@ Sub2API 内置支付系统，支持用户自助充值，无需部署独立的支
 
 每种服务商需要不同的凭证和参数。在 **服务商管理 → 添加服务商** 中选择类型后填写。
 
+> **回调地址自动生成**：添加服务商时，异步回调地址（Notify URL）和同步跳转地址（Return URL）由系统根据你的站点域名自动拼接，无需手动填写。管理员只需确认域名正确即可。
+
 ### EasyPay（易支付）
 
 兼容任何 EasyPay 协议的支付服务商。
@@ -99,8 +101,6 @@ Sub2API 内置支付系统，支持用户自助充值，无需部署独立的支
 | **商户 ID（PID）** | EasyPay 商户 ID | 是 |
 | **商户密钥（PKey）** | EasyPay 商户密钥 | 是 |
 | **API 地址** | EasyPay API 基础地址 | 是 |
-| **异步回调地址** | 支付成功后的回调 URL | 是 |
-| **同步跳转地址** | 支付完成后的跳转 URL | 否 |
 | **支付宝通道 ID** | 指定支付宝通道（可选） | 否 |
 | **微信通道 ID** | 指定微信通道（可选） | 否 |
 
@@ -115,8 +115,6 @@ Sub2API 内置支付系统，支持用户自助充值，无需部署独立的支
 | **AppID** | 支付宝应用 AppID | 是 |
 | **应用私钥** | RSA2 应用私钥 | 是 |
 | **支付宝公钥** | 支付宝公钥 | 是 |
-| **异步回调地址** | 支付成功后的回调 URL | 是 |
-| **同步跳转地址** | 支付完成后的跳转 URL | 否 |
 
 ### 微信官方
 
@@ -127,11 +125,10 @@ Sub2API 内置支付系统，支持用户自助充值，无需部署独立的支
 | **AppID** | 微信支付 AppID | 是 |
 | **商户号（MchID）** | 微信支付商户号 | 是 |
 | **商户 API 私钥** | 商户 API 私钥（PEM 格式） | 是 |
-| **商户证书序列号** | 商户证书序列号 | 是 |
 | **APIv3 密钥** | 32 位 APIv3 密钥 | 是 |
 | **微信支付公钥** | 微信支付公钥（PEM 格式） | 是 |
-| **微信支付公钥 ID** | 微信支付公钥 ID | 是 |
-| **异步回调地址** | 支付成功后的回调 URL | 是 |
+| **微信支付公钥 ID** | 微信支付公钥 ID | 否 |
+| **商户证书序列号** | 商户证书序列号 | 否 |
 
 ### Stripe
 
@@ -176,14 +173,16 @@ Sub2API 内置支付系统，支持用户自助充值，无需部署独立的支
 
 ### 回调地址格式
 
-| 服务商 | 回调地址 |
-|--------|---------|
-| **EasyPay** | `https://your-domain.com/api/v1/payment/easypay/notify` |
-| **支付宝官方** | `https://your-domain.com/api/v1/payment/alipay/notify` |
-| **微信官方** | `https://your-domain.com/api/v1/payment/wxpay/notify` |
-| **Stripe** | `https://your-domain.com/api/v1/payment/stripe/webhook` |
+添加服务商时，系统会自动根据站点域名拼接回调地址，格式如下：
 
-> 将 `your-domain.com` 替换为你的实际域名。
+| 服务商 | 回调路径 |
+|--------|---------|
+| **EasyPay** | `https://your-domain.com/api/v1/payment/webhook/easypay` |
+| **支付宝官方** | `https://your-domain.com/api/v1/payment/webhook/alipay` |
+| **微信官方** | `https://your-domain.com/api/v1/payment/webhook/wxpay` |
+| **Stripe** | `https://your-domain.com/api/v1/payment/webhook/stripe` |
+
+> 将 `your-domain.com` 替换为你的实际域名。EasyPay / 支付宝 / 微信的回调地址在添加服务商时自动填入，无需手动配置。
 
 ### Stripe Webhook 设置