diff --git a/server/marketserver/api/v1/recharge/recharge.go b/server/marketserver/api/v1/recharge/recharge.go
index 6ee139d1..8631fa1a 100644
--- a/server/marketserver/api/v1/recharge/recharge.go
+++ b/server/marketserver/api/v1/recharge/recharge.go
@@ -118,16 +118,6 @@ func (this *RechargeApi) internalBuy(c *gin.Context,
 		f5.RspErr(c, 2, "server internal error")
 		return
 	}
-	if currencyMeta.GetExchangeRate() <= 0 ||
-		currencyMeta.GetExchangeRate() > constant.RECHARGE_CURRENCY_MAX_EXCHANGE_RAET {
-		f5.RspErr(c, 2, "server internal error")
-		return
-	}
-	if currencyMeta.GetCurrencyDecimal() <= 0 ||
-		currencyMeta.GetCurrencyDecimal() > constant.RECHARGE_CURRENCY_MAX_DECIMAL {
-		f5.RspErr(c, 2, "server internal error")
-		return
-	}
 	currencyContractMeta := mt.Table.Contract.GetByNetIdName(netId, currencyMeta.GetCurrencyName())
 	if currencyContractMeta == nil {
 		f5.RspErr(c, 2, "server internal error")
diff --git a/server/marketserver/mt/Currency.go b/server/marketserver/mt/Currency.go
index c18c21f0..b165ee33 100644
--- a/server/marketserver/mt/Currency.go
+++ b/server/marketserver/mt/Currency.go
@@ -10,7 +10,6 @@ import (
 
 type Currency struct {
 	currencyName    string
-	exchangeRate    int64
 	currencyDecimal int64
 	contract        *Contract
 }
@@ -20,9 +19,8 @@ type CurrencyTable struct {
 	netIdHash *q5.ConcurrentMap[int32, *q5.ConcurrentMap[string, *Currency]]
 }
 
-func (this *Currency) init(currencyName string, exchangeRate int64, currencyDecimal int64) {
+func (this *Currency) init(currencyName string, currencyDecimal int64) {
 	this.currencyName = currencyName
-	this.exchangeRate = exchangeRate
 	this.currencyDecimal = currencyDecimal
 }
 
@@ -30,10 +28,6 @@ func (this *Currency) GetCurrencyName() string {
 	return this.currencyName
 }
 
-func (this *Currency) GetExchangeRate() int64 {
-	return this.exchangeRate
-}
-
 func (this *Currency) GetCurrencyDecimal() int64 {
 	return this.currencyDecimal
 }
@@ -43,14 +37,6 @@ func (this *Currency) GetContract() *Contract {
 }
 
 func (this *Currency) check() {
-	if this.GetExchangeRate() <= 0 {
-		panic("Currency exchange_rate <= 0")
-		return
-	}
-	if this.GetExchangeRate() != constant.RECHARGE_CURRENCY_MAX_EXCHANGE_RAET {
-		panic("Currency exchange_rate > uplimit")
-		return
-	}
 	if this.GetCurrencyDecimal() <= 0 {
 		panic("Currency currency_decimal <= 0")
 		return
@@ -107,7 +93,6 @@ func (this *CurrencyTable) Load() {
 				f5.GetSysLog().Info("load currency %s", fileName)
 				currencysCfg := []struct {
 					CurrencyName    string `json:"currency_name"`
-					ExchangeRate    int64  `json:"exchange_rate"`
 					CurrencyDecimal int64  `json:"currency_decimal"`
 				}{}
 				if err := q5.DecodeJson(jsonStr, &currencysCfg); err != nil {
@@ -115,7 +100,7 @@ func (this *CurrencyTable) Load() {
 				}
 				for _, currencyCfg := range currencysCfg {
 					p := new(Currency)
-					p.init(currencyCfg.CurrencyName, currencyCfg.ExchangeRate, currencyCfg.CurrencyDecimal)
+					p.init(currencyCfg.CurrencyName, currencyCfg.CurrencyDecimal)
 					p.check()
 					currencysMeta := this.GetByNetId(netId)
 					if currencysMeta == nil {
@@ -137,7 +122,8 @@ func (this *CurrencyTable) PostInit1() {
 				func(key2 string, val2 *Currency) bool {
 					currencyMeta := val2
 					Table.Recharge.Traverse(func(ele *Recharge) bool {
-						if int64(ele.GetPrice())*currencyMeta.GetExchangeRate() != int64(ele.GetDiamond()) {
+						if int64(ele.GetPrice())*constant.RECHARGE_CURRENCY_MAX_EXCHANGE_RAET !=
+							int64(ele.GetDiamond()) {
 							panic(fmt.Sprintf("Currency verifyerror net_id:%d id:%d", netId, ele.GetId()))
 						}
 						return true