diff --git a/common/constants.go b/common/constants.go
index e11d7fe..8352d14 100644
--- a/common/constants.go
+++ b/common/constants.go
@@ -9,14 +9,19 @@ import (
 	"github.com/google/uuid"
 )
 
+// Pay Settings
+
+var PayAddress = ""
+var CustomCallbackAddress = ""
+var EpayId = ""
+var EpayKey = ""
+var Price = 7.3
+var MinTopUp = 1
+
 var StartTime = time.Now().Unix() // unit: second
 var Version = "v0.0.0"            // this hard coding will be replaced automatically when building, no need to manually change
 var SystemName = "New API"
 var ServerAddress = "http://localhost:3000"
-var PayAddress = ""
-var EpayId = ""
-var EpayKey = ""
-var Price = 7.3
 var Footer = ""
 var Logo = ""
 var TopUpLink = ""
diff --git a/controller/misc.go b/controller/misc.go
index 3ed3c5e..b992a0c 100644
--- a/controller/misc.go
+++ b/controller/misc.go
@@ -27,6 +27,7 @@ func GetStatus(c *gin.Context) {
 			"wechat_login":             common.WeChatAuthEnabled,
 			"server_address":           common.ServerAddress,
 			"price":                    common.Price,
+			"min_topup":                common.MinTopUp,
 			"turnstile_check":          common.TurnstileCheckEnabled,
 			"turnstile_site_key":       common.TurnstileSiteKey,
 			"top_up_link":              common.TopUpLink,
diff --git a/controller/topup.go b/controller/topup.go
index 961ffa2..3203eb8 100644
--- a/controller/topup.go
+++ b/controller/topup.go
@@ -9,6 +9,7 @@ import (
 	"net/url"
 	"one-api/common"
 	"one-api/model"
+	"one-api/service"
 	"strconv"
 	"time"
 )
@@ -55,14 +56,14 @@ func RequestEpay(c *gin.Context) {
 		c.JSON(200, gin.H{"message": err.Error(), "data": 10})
 		return
 	}
-	if req.Amount < 1 {
-		c.JSON(200, gin.H{"message": "充值金额不能小于1", "data": 10})
+	if req.Amount < common.MinTopUp {
+		c.JSON(200, gin.H{"message": fmt.Sprintf("充值数量不能小于 %d", common.MinTopUp), "data": 10})
 		return
 	}
 
 	id := c.GetInt("id")
 	user, _ := model.GetUserById(id, false)
-	amount := GetAmount(float64(req.Amount), *user)
+	payMoney := GetAmount(float64(req.Amount), *user)
 
 	var payType epay.PurchaseType
 	if req.PaymentMethod == "zfb" {
@@ -72,11 +73,10 @@ func RequestEpay(c *gin.Context) {
 		req.PaymentMethod = "wxpay"
 		payType = epay.WechatPay
 	}
-
+	callBackAddress := service.GetCallbackAddress()
 	returnUrl, _ := url.Parse(common.ServerAddress + "/log")
-	notifyUrl, _ := url.Parse(common.ServerAddress + "/api/user/epay/notify")
+	notifyUrl, _ := url.Parse(callBackAddress + "/api/user/epay/notify")
 	tradeNo := strconv.FormatInt(time.Now().Unix(), 10)
-	payMoney := amount
 	client := GetEpayClient()
 	if client == nil {
 		c.JSON(200, gin.H{"message": "error", "data": "当前管理员未配置支付信息"})
@@ -169,8 +169,8 @@ func RequestAmount(c *gin.Context) {
 		c.JSON(200, gin.H{"message": "error", "data": "参数错误"})
 		return
 	}
-	if req.Amount < 1 {
-		c.JSON(200, gin.H{"message": "error", "data": "充值金额不能小于1"})
+	if req.Amount < common.MinTopUp {
+		c.JSON(200, gin.H{"message": "error", "data": fmt.Sprintf("充值数量不能小于 %d", common.MinTopUp)})
 		return
 	}
 	id := c.GetInt("id")
diff --git a/model/option.go b/model/option.go
index 03c0230..c2aeecd 100644
--- a/model/option.go
+++ b/model/option.go
@@ -56,9 +56,11 @@ func InitOptionMap() {
 	common.OptionMap["Logo"] = common.Logo
 	common.OptionMap["ServerAddress"] = ""
 	common.OptionMap["PayAddress"] = ""
+	common.OptionMap["CustomCallbackAddress"] = ""
 	common.OptionMap["EpayId"] = ""
 	common.OptionMap["EpayKey"] = ""
 	common.OptionMap["Price"] = strconv.FormatFloat(common.Price, 'f', -1, 64)
+	common.OptionMap["MinTopUp"] = strconv.Itoa(common.MinTopUp)
 	common.OptionMap["TopupGroupRatio"] = common.TopupGroupRatio2JSONString()
 	common.OptionMap["GitHubClientId"] = ""
 	common.OptionMap["GitHubClientSecret"] = ""
@@ -194,12 +196,16 @@ func updateOptionMap(key string, value string) (err error) {
 		common.ServerAddress = value
 	case "PayAddress":
 		common.PayAddress = value
+	case "CustomCallbackAddress":
+		common.CustomCallbackAddress = value
 	case "EpayId":
 		common.EpayId = value
 	case "EpayKey":
 		common.EpayKey = value
 	case "Price":
 		common.Price, _ = strconv.ParseFloat(value, 64)
+	case "MinTopUp":
+		common.MinTopUp, _ = strconv.Atoi(value)
 	case "TopupGroupRatio":
 		err = common.UpdateTopupGroupRatioByJSONString(value)
 	case "GitHubClientId":
diff --git a/service/epay.go b/service/epay.go
new file mode 100644
index 0000000..7ce4aad
--- /dev/null
+++ b/service/epay.go
@@ -0,0 +1,10 @@
+package service
+
+import "one-api/common"
+
+func GetCallbackAddress() string {
+	if common.CustomCallbackAddress == "" {
+		return common.ServerAddress
+	}
+	return common.CustomCallbackAddress
+}
diff --git a/web/src/components/SystemSetting.js b/web/src/components/SystemSetting.js
index 197050e..e622574 100644
--- a/web/src/components/SystemSetting.js
+++ b/web/src/components/SystemSetting.js
@@ -20,8 +20,10 @@ const SystemSetting = () => {
         EpayId: '',
         EpayKey: '',
         Price: 7.3,
+        MinTopUp: 1,
         TopupGroupRatio: '',
         PayAddress: '',
+        CustomCallbackAddress: '',
         Footer: '',
         WeChatAuthEnabled: '',
         WeChatServerAddress: '',
@@ -280,7 +282,7 @@ const SystemSetting = () => {
                         更新服务器地址
                     </Form.Button>
                     <Divider/>
-                    <Header as='h3'>支付设置（当前仅支持易支付接口，使用上方服务器地址作为回调地址！）</Header>
+                    <Header as='h3'>支付设置（当前仅支持易支付接口，默认使用上方服务器地址作为回调地址！）</Header>
                     <Form.Group widths='equal'>
                         <Form.Input
                             label='支付地址，不填写则不启用在线支付'
@@ -303,14 +305,31 @@ const SystemSetting = () => {
                             name='EpayKey'
                             onChange={handleInputChange}
                         />
-                        <Form.Input
-                            label='充值价格（x元/美金）'
-                            placeholder='例如：7，就是7元/美金'
-                            value={inputs.Price}
-                            name='Price'
 
-                            min={0}
-                            onChange={handleInputChange}
+                    </Form.Group>
+                    <Form.Group widths='equal'>
+                        <Form.Input
+                          label='回调地址，不填写则使用上方服务器地址作为回调地址'
+                          placeholder='例如：https://yourdomain.com'
+                          value={inputs.CustomCallbackAddress}
+                          name='CustomCallbackAddress'
+                          onChange={handleInputChange}
+                        />
+                        <Form.Input
+                          label='充值价格（x元/美金）'
+                          placeholder='例如：7，就是7元/美金'
+                          value={inputs.Price}
+                          name='Price'
+                          min={0}
+                          onChange={handleInputChange}
+                        />
+                        <Form.Input
+                          label='最低充值数量'
+                          placeholder='例如：2，就是最低充值2$'
+                          value={inputs.MinTopUp}
+                          name='MinTopUp'
+                          min={1}
+                          onChange={handleInputChange}
                         />
                     </Form.Group>
                     <Form.Group widths='equal'>
diff --git a/web/src/pages/TopUp/index.js b/web/src/pages/TopUp/index.js
index 822ae24..92ae57e 100644
--- a/web/src/pages/TopUp/index.js
+++ b/web/src/pages/TopUp/index.js
@@ -10,6 +10,7 @@ const TopUp = () => {
     const [topUpCount, setTopUpCount] = useState(10);
     const [minTopupCount, setMinTopUpCount] = useState(1);
     const [amount, setAmount] = useState(0.0);
+    const [minTopUp, setMinTopUp] = useState(1);
     const [topUpLink, setTopUpLink] = useState('');
     const [enableOnlineTopUp, setEnableOnlineTopUp] = useState(false);
     const [userQuota, setUserQuota] = useState(0);
@@ -61,6 +62,10 @@ const TopUp = () => {
         if (amount === 0) {
             await getAmount();
         }
+        if (topUpCount < minTopUp) {
+            showInfo('充值数量不能小于' + minTopUp);
+            return;
+        }
         setPayWay(payment)
         setOpen(true);
     }
@@ -69,6 +74,10 @@ const TopUp = () => {
         if (amount === 0) {
             await getAmount();
         }
+        if (topUpCount < minTopUp) {
+            showInfo('充值数量不能小于' + minTopUp);
+            return;
+        }
         setOpen(false);
         try {
             const res = await API.post('/api/user/pay', {
@@ -132,6 +141,9 @@ const TopUp = () => {
             if (status.top_up_link) {
                 setTopUpLink(status.top_up_link);
             }
+            if (status.min_topup) {
+                setMinTopUp(status.min_topup);
+            }
             if (status.enable_online_topup) {
                 setEnableOnlineTopUp(status.enable_online_topup);
             }
@@ -239,12 +251,13 @@ const TopUp = () => {
                                         disabled={!enableOnlineTopUp}
                                         field={'redemptionCount'}
                                         label={'实付金额：' + renderAmount()}
-                                        placeholder='充值数量'
+                                        placeholder={'充值数量，最低' + minTopUp + '$'}
                                         name='redemptionCount'
                                         type={'number'}
                                         value={topUpCount}
                                         suffix={'$'}
-                                        min={1}
+                                        min={minTopUp}
+                                        defaultValue={minTopUp}
                                         max={100000}
                                         onChange={async (value) => {
                                             if (value < 1) {