diff --git a/backend/internal/bootstrap/seed.go b/backend/internal/bootstrap/seed.go
index e35f83d..65e313f 100644
--- a/backend/internal/bootstrap/seed.go
+++ b/backend/internal/bootstrap/seed.go
@@ -36,7 +36,7 @@ func seedDefaults(ctx context.Context, db *gorm.DB) error {
 		{Key: "credits.invite_reward", Value: "3"},
 		{Key: "credits.cdk_redeem_enabled", Value: "true"},
 		{Key: "pay.enabled", Value: "false"},
-		{Key: "pay.api_base", Value: "https://pay.v8jisu.cn/api/pay"},
+		{Key: "pay.api_base", Value: "https://www.ezfpy.cn"},
 		{Key: "pay.methods", Value: "wxpay,alipay"},
 		{Key: "pay.min_amount", Value: "1"},
 		{Key: "pay.points_ratio", Value: "100"},
diff --git a/backend/internal/provider/epay/client.go b/backend/internal/provider/epay/client.go
index 95a2bdd..7130de6 100644
--- a/backend/internal/provider/epay/client.go
+++ b/backend/internal/provider/epay/client.go
@@ -1,6 +1,6 @@
 // Package epay implements the 易支付 mapi (API 下单) interface with MD5 signing.
-// POST {api_base}/mapi → JSON {code, msg, trade_no, payurl, qrcode}.
-// Docs: 请求字段 pid/type/out_trade_no/notify_url/name/money/sign/sign_type.
+// POST {api_base}/mapi.php → JSON {code, msg, trade_no, payurl, qrcode}.
+// Docs: 请求字段 pid/type/out_trade_no/notify_url/return_url/name/money/sign/sign_type.
 package epay
 
 import (
@@ -18,7 +18,7 @@ import (
 )
 
 type Config struct {
-	APIBase string // 易支付 API 根地址,如 https://pay.v8jisu.cn/api/pay(自动拼 /mapi)
+	APIBase string // 易支付站点根地址,如 https://www.ezfpy.cn(自动拼 /mapi.php)
 	PID     string // 商户ID
 	Key     string // 商户密钥
 }
@@ -29,7 +29,7 @@ type CreateRequest struct {
 	Name       string
 	Money      string // "10.00"
 	NotifyURL  string
-	ReturnURL  string
+	ReturnURL  string // 页面跳转通知地址(必填)
 	ClientIP   string // unused by mapi; kept for caller convenience
 }
 
@@ -39,7 +39,7 @@ type CreateResult struct {
 	PayInfo string // 二维码内容 或 跳转 url
 }
 
-// mapiResp is the raw mapi response. code: 1 成功, -1 失败.
+// mapiResp is the raw mapi response. code: 1 或 200 为成功,其它为失败.
 type mapiResp struct {
 	Code    int    `json:"code"`
 	Msg     string `json:"msg"`
@@ -85,18 +85,16 @@ func (c *Config) Create(ctx context.Context, req CreateRequest) (*CreateResult,
 		"notify_url":   req.NotifyURL,
 		"name":         req.Name,
 		"money":        req.Money,
+		"return_url":   req.ReturnURL,
 		"sign_type":    "MD5",
 	}
-	if req.ReturnURL != "" {
-		params["return_url"] = req.ReturnURL
-	}
 	params["sign"] = sign(params, c.Key)
 
 	form := url.Values{}
 	for k, v := range params {
 		form.Set(k, v)
 	}
-	endpoint := strings.TrimRight(c.APIBase, "/") + "/mapi"
+	endpoint := strings.TrimRight(c.APIBase, "/") + "/mapi.php"
 	httpReq, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint, strings.NewReader(form.Encode()))
 	if err != nil {
 		return nil, err
@@ -112,7 +110,7 @@ func (c *Config) Create(ctx context.Context, req CreateRequest) (*CreateResult,
 	if err := json.Unmarshal(body, &out); err != nil {
 		return nil, fmt.Errorf("epay: bad response: %s", strings.TrimSpace(string(body)))
 	}
-	if out.Code != 1 {
+	if out.Code != 1 && out.Code != 200 {
 		msg := out.Msg
 		if msg == "" {
 			msg = "下单失败"
diff --git a/backend/internal/service/payment.go b/backend/internal/service/payment.go
index 739e871..69cafd2 100644
--- a/backend/internal/service/payment.go
+++ b/backend/internal/service/payment.go
@@ -42,7 +42,7 @@ type PaySettings struct {
 	Enabled     bool     `json:"enabled"`
 	PID         string   `json:"pid"`
 	Key         string   `json:"key"`
-	APIBase     string   `json:"api_base"`     // 易支付站点根地址,代码自动拼 /api/pay/create
+	APIBase     string   `json:"api_base"`     // 易支付站点根地址,代码自动拼 /mapi.php
 	Methods     []string `json:"methods"`      // wxpay, alipay
 	MinAmount   float64  `json:"min_amount"`
 	PointsRatio int      `json:"points_ratio"` // 积分 per 元
@@ -56,7 +56,7 @@ func (s *PaymentService) get(ctx context.Context, key string) string {
 func (s *PaymentService) Settings(ctx context.Context) PaySettings {
 	api := strings.TrimRight(strings.TrimSpace(s.get(ctx, "pay.api_base")), "/")
 	if api == "" {
-		api = "https://pay.v8jisu.cn/api/pay"
+		api = "https://www.ezfpy.cn"
 	}
 	ratio, _ := strconv.Atoi(s.get(ctx, "pay.points_ratio"))
 	if ratio <= 0 {
@@ -174,6 +174,7 @@ func (s *PaymentService) CreateOrder(ctx context.Context, user *model.User, amou
 		Name:       fmt.Sprintf("积分充值 %d", points),
 		Money:      strconv.FormatFloat(amount, 'f', 2, 64),
 		NotifyURL:  strings.TrimRight(notifyBase, "/") + "/admin/api/pay/notify",
+		ReturnURL:  strings.TrimRight(notifyBase, "/") + "/settings",
 		ClientIP:   clientIP,
 	})
 	if err != nil {
diff --git a/frontend/src/views/ConfigView.vue b/frontend/src/views/ConfigView.vue
index a4a1fbd..9c3d7bf 100644
--- a/frontend/src/views/ConfigView.vue
+++ b/frontend/src/views/ConfigView.vue
@@ -534,8 +534,8 @@ onMounted(() => { loadSite(); loadReg(); loadSmtp(); loadCredits(); loadAnnounce
           <input type="checkbox" v-model="pay.enabled" class="sw" />
         </label>
         <label class="row">
-          <span><span class="lbl">支付地址</span><span class="hint">易支付 API 根地址,自动拼 /mapi。</span></span>
-          <input v-model="pay.api_base" placeholder="https://pay.v8jisu.cn/api/pay" class="field !w-64" />
+          <span><span class="lbl">支付地址</span><span class="hint">易支付站点根地址,自动拼 /mapi.php。</span></span>
+          <input v-model="pay.api_base" placeholder="https://www.ezfpy.cn" class="field !w-64" />
         </label>
         <label class="row">
           <span><span class="lbl">商户ID (PID)</span></span>