diff --git a/common/topup-ratio.go b/common/topup-ratio.go
new file mode 100644
index 00000000..e045d9b7
--- /dev/null
+++ b/common/topup-ratio.go
@@ -0,0 +1,31 @@
+package common
+
+import "encoding/json"
+
+var TopupGroupRatio = map[string]float64{
+	"default": 1,
+	"vip":     1,
+	"svip":    1,
+}
+
+func TopupGroupRatio2JSONString() string {
+	jsonBytes, err := json.Marshal(TopupGroupRatio)
+	if err != nil {
+		SysError("error marshalling model ratio: " + err.Error())
+	}
+	return string(jsonBytes)
+}
+
+func UpdateTopupGroupRatioByJSONString(jsonStr string) error {
+	TopupGroupRatio = make(map[string]float64)
+	return json.Unmarshal([]byte(jsonStr), &TopupGroupRatio)
+}
+
+func GetTopupGroupRatio(name string) float64 {
+	ratio, ok := TopupGroupRatio[name]
+	if !ok {
+		SysError("topup group ratio not found: " + name)
+		return 1
+	}
+	return ratio
+}
diff --git a/controller/topup.go b/controller/topup.go
index 6fd0a223..5d945878 100644
--- a/controller/topup.go
+++ b/controller/topup.go
@@ -38,9 +38,13 @@ func GetEpayClient() *epay.Client {
 	return withUrl
 }
 
-func GetAmount(count float64) float64 {
+func GetAmount(count float64, user model.User) float64 {
 	// 别问为什么用float64，问就是这么点钱没必要
-	amount := count * common.Price
+	topupGroupRatio := common.GetTopupGroupRatio(user.Group)
+	if topupGroupRatio == 0 {
+		topupGroupRatio = 1
+	}
+	amount := count * common.Price * topupGroupRatio
 	return amount
 }
 
@@ -57,7 +61,8 @@ func RequestEpay(c *gin.Context) {
 	}
 
 	id := c.GetInt("id")
-	amount := GetAmount(float64(req.Amount))
+	user, _ := model.GetUserById(id, false)
+	amount := GetAmount(float64(req.Amount), *user)
 
 	if req.PaymentMethod == "zfb" {
 		req.PaymentMethod = "alipay"
@@ -148,7 +153,7 @@ func EpayNotify(c *gin.Context) {
 				return
 			}
 			log.Printf("易支付回调更新用户成功 %v", topUp)
-			model.RecordLog(topUp.UserId, model.LogTypeTopup, fmt.Sprintf("使用在线充值成功，充值金额: %v", common.LogQuota(topUp.Amount*500000)))
+			model.RecordLog(topUp.UserId, model.LogTypeTopup, fmt.Sprintf("使用在线充值成功，充值金额: %v，支付金额：%d", common.LogQuota(topUp.Amount*500000), topUp.Money))
 		}
 	} else {
 		log.Printf("易支付异常回调: %v", verifyInfo)
@@ -166,6 +171,7 @@ func RequestAmount(c *gin.Context) {
 		c.JSON(200, gin.H{"message": "error", "data": "充值金额不能小于1"})
 		return
 	}
-
-	c.JSON(200, gin.H{"message": "success", "data": GetAmount(float64(req.Amount))})
+	id := c.GetInt("id")
+	user, _ := model.GetUserById(id, false)
+	c.JSON(200, gin.H{"message": "success", "data": GetAmount(float64(req.Amount), *user)})
 }
diff --git a/model/option.go b/model/option.go
index 84841e08..a56ab4a5 100644
--- a/model/option.go
+++ b/model/option.go
@@ -57,6 +57,7 @@ func InitOptionMap() {
 	common.OptionMap["EpayId"] = ""
 	common.OptionMap["EpayKey"] = ""
 	common.OptionMap["Price"] = strconv.FormatFloat(common.Price, 'f', -1, 64)
+	common.OptionMap["TopupGroupRatio"] = common.TopupGroupRatio2JSONString()
 	common.OptionMap["GitHubClientId"] = ""
 	common.OptionMap["GitHubClientSecret"] = ""
 	common.OptionMap["WeChatServerAddress"] = ""
@@ -184,6 +185,8 @@ func updateOptionMap(key string, value string) (err error) {
 		common.EpayKey = value
 	case "Price":
 		common.Price, _ = strconv.ParseFloat(value, 64)
+	case "TopupGroupRatio":
+		err = common.UpdateTopupGroupRatioByJSONString(value)
 	case "GitHubClientId":
 		common.GitHubClientId = value
 	case "GitHubClientSecret":
diff --git a/web/src/components/SystemSetting.js b/web/src/components/SystemSetting.js
index efb437ab..2197f3fb 100644
--- a/web/src/components/SystemSetting.js
+++ b/web/src/components/SystemSetting.js
@@ -1,6 +1,6 @@
 import React, {useEffect, useState} from 'react';
 import {Button, Divider, Form, Grid, Header, Modal, Message} from 'semantic-ui-react';
-import {API, removeTrailingSlash, showError} from '../helpers';
+import {API, removeTrailingSlash, showError, verifyJSON} from '../helpers';
 
 const SystemSetting = () => {
     let [inputs, setInputs] = useState({
@@ -20,6 +20,7 @@ const SystemSetting = () => {
         EpayId: '',
         EpayKey: '',
         Price: 7.3,
+        TopupGroupRatio: '',
         PayAddress: '',
         Footer: '',
         WeChatAuthEnabled: '',
@@ -45,6 +46,9 @@ const SystemSetting = () => {
         if (success) {
             let newInputs = {};
             data.forEach((item) => {
+                if (item.key === 'TopupGroupRatio') {
+                    item.value = JSON.stringify(JSON.parse(item.value), null, 2);
+                }
                 newInputs[item.key] = item.value;
             });
             setInputs({
@@ -123,7 +127,8 @@ const SystemSetting = () => {
             name === 'WeChatAccountQRCodeImageURL' ||
             name === 'TurnstileSiteKey' ||
             name === 'TurnstileSecretKey' ||
-            name === 'EmailDomainWhitelist'
+            name === 'EmailDomainWhitelist' ||
+            name === 'TopupGroupRatio'
         ) {
             setInputs((inputs) => ({...inputs, [name]: value}));
         } else {
@@ -141,6 +146,13 @@ const SystemSetting = () => {
             showError('请先填写服务器地址');
             return
         }
+        if (originInputs['TopupGroupRatio'] !== inputs.TopupGroupRatio) {
+            if (!verifyJSON(inputs.TopupGroupRatio)) {
+                showError('充值分组倍率不是合法的 JSON 字符串');
+                return;
+            }
+            await updateOption('TopupGroupRatio', inputs.TopupGroupRatio);
+        }
         let PayAddress = removeTrailingSlash(inputs.PayAddress);
         await updateOption('PayAddress', PayAddress);
         await updateOption('EpayId', inputs.EpayId);
@@ -297,8 +309,19 @@ const SystemSetting = () => {
                             onChange={handleInputChange}
                         />
                     </Form.Group>
+                    <Form.Group widths='equal'>
+                        <Form.TextArea
+                            label='充值分组倍率'
+                            name='TopupGroupRatio'
+                            onChange={handleInputChange}
+                            style={{minHeight: 250, fontFamily: 'JetBrains Mono, Consolas'}}
+                            autoComplete='new-password'
+                            value={inputs.TopupGroupRatio}
+                            placeholder='为一个 JSON 文本，键为组名称，值为倍率'
+                        />
+                    </Form.Group>
                     <Form.Button onClick={submitPayAddress}>
-                        更新支付地址
+                        更新支付设置
                     </Form.Button>
                     <Divider/>
                     <Header as='h3'>配置登录注册</Header>