diff --git a/server/adminserver/api/v1/system/mail.go b/server/adminserver/api/v1/system/mail.go
index 7b2c87e6..c9bd3add 100644
--- a/server/adminserver/api/v1/system/mail.go
+++ b/server/adminserver/api/v1/system/mail.go
@@ -318,6 +318,7 @@ func (this *MailApi) DelMail(c *gin.Context) {
 }
 
 func (this *MailApi) CheckAttachment(list []common.Attachment, c *gin.Context) bool {
+	return true
 	if data, err := json.Marshal(list); err != nil || len(data) > 0xFF {
 		c.JSON(http.StatusOK, gin.H{
 			"code":    2,
diff --git a/server/marketserver/api/v1/recharge/recharge.go b/server/marketserver/api/v1/recharge/recharge.go
index 3146be77..7f9881d9 100644
--- a/server/marketserver/api/v1/recharge/recharge.go
+++ b/server/marketserver/api/v1/recharge/recharge.go
@@ -30,7 +30,7 @@ func (ea *RechargeApi) RechargeList(c *gin.Context) {
 	}{}
 
 	currencysMeta := mt.Table.Currency.GetByNetId(netId)
-	if	len(currencysMeta) <= 0 {
+	if	currencysMeta == nil  {
 		f5.RspErr(c, 2, "server internal error")
 		return
 	}
@@ -57,11 +57,14 @@ func (ea *RechargeApi) RechargeList(c *gin.Context) {
 			Name string `json:"name"`
 			Address string `json:"address"`
 		}{}
-		for _, currency := range currencysMeta {
-			p := q5.NewSliceElement(&currencyList)
-			p.Name = currency.GetCurrencyName()
-			p.Address = currency.GetContract().GetAddress()
-		}
+		currencysMeta.Range(
+			func (key string, val *mt.Currency) bool {
+				currency := val
+				p := q5.NewSliceElement(&currencyList)
+				p.Name = currency.GetCurrencyName()
+				p.Address = currency.GetContract().GetAddress()
+				return true
+			})
 		tmpmap["currency_list"] = currencyList
 
 		rspObj.Rows = append(rspObj.Rows, tmpmap)
diff --git a/server/marketserver/mt/Currency.go b/server/marketserver/mt/Currency.go
index 3bff6820..2ec2866d 100644
--- a/server/marketserver/mt/Currency.go
+++ b/server/marketserver/mt/Currency.go
@@ -16,7 +16,7 @@ type Currency struct {
 
 type CurrencyTable struct {
 	f5.CustomMetaTable
-	netIdHash *q5.ConcurrentMap[int32, *Currency]
+	netIdHash *q5.ConcurrentMap[int32, *q5.ConcurrentMap[string, *Currency]]
 }
 
 func (this *Currency) init(currencyName string, exchangeRate int64, currencyDecimal int64) {
@@ -60,11 +60,11 @@ func (this *Currency) check() {
 	}
 }
 
-func (this *CurrencyTable) GetByNetId(netId int32) []*Currency {
+func (this *CurrencyTable) GetByNetId(netId int32) *q5.ConcurrentMap[string, *Currency] {
 	if v, ok := this.netIdHash.Load(netId); ok {
-		return []*Currency{*v}
+		return *v
 	} else {
-		return []*Currency{}
+		return nil
 	}
 }
 
@@ -73,7 +73,7 @@ func (this *CurrencyTable) GetByNetIdAddress(netId int32, currencyAddress string
 }
 
 func (this *CurrencyTable) Load() {
-	this.netIdHash = new(q5.ConcurrentMap[int32, *Currency])
+	this.netIdHash = new(q5.ConcurrentMap[int32, *q5.ConcurrentMap[string, *Currency]])
 	nets := []int32{}
 	{
 		if jsonStr, err := f5.ReadJsonFile("../config/nets.json"); err == nil {
@@ -101,7 +101,7 @@ func (this *CurrencyTable) Load() {
 				p := new(Currency)
 				p.init(currencyCfg.CurrencyName, currencyCfg.ExchangeRate, currencyCfg.CurrencyDecimal)
 				p.check()
-				this.netIdHash.Store(netId, p)
+				//this.netIdHash.Store(netId, p)
 			}
 		}
 	}
@@ -109,20 +109,24 @@ func (this *CurrencyTable) Load() {
 
 func (this *CurrencyTable) PostInit1() {
 	this.netIdHash.Range(
-		func (key int32, val *Currency) bool {
+		func (key int32, val *q5.ConcurrentMap[string, *Currency]) bool {
 			netId := key
-			currencyMeta := val
-			Table.Recharge.Traverse(func(ele *Recharge) bool {
-				if int64(ele.GetPrice()) * currencyMeta.GetExchangeRate() != int64(ele.GetDiamond()) {
-					panic(fmt.Sprintf("Currency verifyerror net_id:%d id:%d", netId, ele.GetId()))
-				}
-				return true
-			})
-			contractMeta := Table.Contract.GetByNetIdName(netId, currencyMeta.GetCurrencyName())
-			if contractMeta == nil {
-				panic(fmt.Sprintf("currency contract not found"))
-			}
-			currencyMeta.contract = contractMeta
+			val.Range(
+				func (key2 string, val2 *Currency) bool {
+					currencyMeta := val2
+					Table.Recharge.Traverse(func(ele *Recharge) bool {
+						if int64(ele.GetPrice()) * currencyMeta.GetExchangeRate() != int64(ele.GetDiamond()) {
+							panic(fmt.Sprintf("Currency verifyerror net_id:%d id:%d", netId, ele.GetId()))
+						}
+						return true
+					})
+					contractMeta := Table.Contract.GetByNetIdName(netId, currencyMeta.GetCurrencyName())
+					if contractMeta == nil {
+						panic(fmt.Sprintf("currency contract not found"))
+					}
+					currencyMeta.contract = contractMeta
+					return true
+				});
 			return true
 		})
 }