diff --git a/pkg/bbgo/environment.go b/pkg/bbgo/environment.go
index a7873ef6b..ab8615313 100644
--- a/pkg/bbgo/environment.go
+++ b/pkg/bbgo/environment.go
@@ -520,11 +520,6 @@ func (environ *Environment) Sync(ctx context.Context, userConfig ...*Config) err
 		return nil
 	}
 
-	// for paper trade mode, skip sync
-	if util.IsPaperTrade() {
-		return nil
-	}
-
 	environ.syncMutex.Lock()
 	defer environ.syncMutex.Unlock()
 
diff --git a/pkg/exchange/binance/exchange.go b/pkg/exchange/binance/exchange.go
index b36950627..6d4594da4 100644
--- a/pkg/exchange/binance/exchange.go
+++ b/pkg/exchange/binance/exchange.go
@@ -3,7 +3,6 @@ package binance
 import (
 	"context"
 	"fmt"
-	"os"
 	"strconv"
 	"strings"
 	"sync"
@@ -67,12 +66,7 @@ func init() {
 }
 
 func isBinanceUs() bool {
-	v, err := strconv.ParseBool(os.Getenv("BINANCE_US"))
-	return err == nil && v
-}
-
-func paperTrade() bool {
-	v, ok := util.GetEnvVarBool("PAPER_TRADE")
+	v, ok := util.GetEnvVarBool("BINANCE_US")
 	return ok && v
 }
 
@@ -97,6 +91,9 @@ type Exchange struct {
 var timeSetterOnce sync.Once
 
 func New(key, secret string) *Exchange {
+	if util.IsPaperTrade() {
+		binance.UseTestnet = true
+	}
 	var client = binance.NewClient(key, secret)
 	client.HTTPClient = binanceapi.DefaultHttpClient
 	client.Debug = viper.GetBool("debug-binance-client")
@@ -109,11 +106,6 @@ func New(key, secret string) *Exchange {
 		client.BaseURL = BinanceUSBaseURL
 	}
 
-	if paperTrade() {
-		client.BaseURL = BinanceTestBaseURL
-		futuresClient.BaseURL = FutureTestBaseURL
-	}
-
 	client2 := binanceapi.NewClient(client.BaseURL)
 	futuresClient2 := binanceapi.NewFuturesRestClient(futuresClient.BaseURL)
 
diff --git a/pkg/service/sync.go b/pkg/service/sync.go
index ae9f6adb7..718c4dc8f 100644
--- a/pkg/service/sync.go
+++ b/pkg/service/sync.go
@@ -6,6 +6,7 @@ import (
 	"time"
 
 	"github.com/c9s/bbgo/pkg/cache"
+	"github.com/c9s/bbgo/pkg/util"
 
 	log "github.com/sirupsen/logrus"
 
@@ -88,6 +89,10 @@ func (s *SyncService) SyncRewardHistory(ctx context.Context, exchange types.Exch
 	}
 
 	log.Infof("syncing %s reward records...", exchange.Name())
+	if util.IsPaperTrade() {
+		log.Info("reward is not supported in paper trading")
+		return nil
+	}
 	if err := s.RewardService.Sync(ctx, exchange, startTime); err != nil {
 		return err
 	}
@@ -97,6 +102,11 @@ func (s *SyncService) SyncRewardHistory(ctx context.Context, exchange types.Exch
 
 func (s *SyncService) SyncDepositHistory(ctx context.Context, exchange types.Exchange, startTime time.Time) error {
 	log.Infof("syncing %s deposit records...", exchange.Name())
+	if util.IsPaperTrade() {
+		log.Info("deposit is not supported in paper trading")
+		return nil
+	}
+
 	if err := s.DepositService.Sync(ctx, exchange, startTime); err != nil {
 		if err != ErrNotImplemented {
 			log.Warnf("%s deposit service is not supported", exchange.Name())
@@ -109,6 +119,11 @@ func (s *SyncService) SyncDepositHistory(ctx context.Context, exchange types.Exc
 
 func (s *SyncService) SyncWithdrawHistory(ctx context.Context, exchange types.Exchange, startTime time.Time) error {
 	log.Infof("syncing %s withdraw records...", exchange.Name())
+	if util.IsPaperTrade() {
+		log.Info("withdraw is not supported in paper trading")
+		return nil
+	}
+
 	if err := s.WithdrawService.Sync(ctx, exchange, startTime); err != nil {
 		if err != ErrNotImplemented {
 			log.Warnf("%s withdraw service is not supported", exchange.Name())