diff --git a/pkg/cmd/cancel.go b/pkg/cmd/cancel.go
index 99c24e4d0..856a4bacd 100644
--- a/pkg/cmd/cancel.go
+++ b/pkg/cmd/cancel.go
@@ -22,6 +22,7 @@ func init() {
 	CancelCmd.Flags().String("session", "", "session to execute cancel orders")
 	CancelCmd.Flags().String("symbol", "", "symbol to cancel orders")
 	CancelCmd.Flags().Int64("group-id", 0, "groupID to cancel orders")
+	CancelCmd.Flags().Bool("all", false, "cancel all orders")
 	RootCmd.AddCommand(CancelCmd)
 }
 
@@ -47,6 +48,11 @@ var CancelCmd = &cobra.Command{
 			return err
 		}
 
+		all, err := cmd.Flags().GetBool("all")
+		if err != nil {
+			return err
+		}
+
 		configFile, err := cmd.Flags().GetString("config")
 		if err != nil {
 			return err
@@ -62,7 +68,7 @@ var CancelCmd = &cobra.Command{
 		}
 
 		environ := bbgo.NewEnvironment()
-		if err := environ.ConfigureDatabase(ctx) ; err != nil {
+		if err := environ.ConfigureDatabase(ctx); err != nil {
 			return err
 		}
 
@@ -91,30 +97,41 @@ var CancelCmd = &cobra.Command{
 			var log = logrus.WithField("session", sessionID)
 
 			e, ok := session.Exchange.(advancedOrderCancelApi)
-			if ok && groupID > 0 {
-				log.Infof("canceling orders by group id: %d", groupID)
+			if ok {
+				if all {
+					log.Infof("canceling all orders")
 
-				orders, err := e.CancelOrdersByGroupID(ctx, groupID)
-				if err != nil {
-					return err
+					orders, err := e.CancelAllOrders(ctx)
+					if err != nil {
+						return err
+					}
+
+					for _, o := range orders {
+						log.Info("CANCELED ", o.String())
+					}
+				} else if groupID > 0 {
+					log.Infof("canceling orders by group id: %d", groupID)
+
+					orders, err := e.CancelOrdersByGroupID(ctx, groupID)
+					if err != nil {
+						return err
+					}
+
+					for _, o := range orders {
+						log.Info("CANCELED ", o.String())
+					}
+				} else if len(symbol) > 0 {
+					log.Infof("canceling orders by symbol: %s", symbol)
+
+					orders, err := e.CancelOrdersBySymbol(ctx, symbol)
+					if err != nil {
+						return err
+					}
+
+					for _, o := range orders {
+						log.Info("CANCELED ", o.String())
+					}
 				}
-
-				for _, o := range orders {
-					log.Info("CANCELED ", o.String())
-				}
-
-			} else if ok && len(symbol) > 0 {
-				log.Infof("canceling orders by symbol: %s", symbol)
-
-				orders, err := e.CancelOrdersBySymbol(ctx, symbol)
-				if err != nil {
-					return err
-				}
-
-				for _, o := range orders {
-					log.Info("CANCELED ", o.String())
-				}
-
 			} else if len(symbol) > 0 {
 				openOrders, err := session.Exchange.QueryOpenOrders(ctx, symbol)
 				if err != nil {
diff --git a/pkg/exchange/max/maxapi/order.go b/pkg/exchange/max/maxapi/order.go
index 1d6a8f4bc..ea5900a10 100644
--- a/pkg/exchange/max/maxapi/order.go
+++ b/pkg/exchange/max/maxapi/order.go
@@ -243,25 +243,40 @@ type OrderCancelAllRequest struct {
 	client *RestClient
 
 	params OrderCancelAllRequestParams
+
+	side    *string
+	market  *string
+	groupID *int64
 }
 
 func (r *OrderCancelAllRequest) Side(side string) *OrderCancelAllRequest {
-	r.params.Side = side
+	r.side = &side
 	return r
 }
 
 func (r *OrderCancelAllRequest) Market(market string) *OrderCancelAllRequest {
-	r.params.Market = market
+	r.market = &market
 	return r
 }
 
 func (r *OrderCancelAllRequest) GroupID(groupID int64) *OrderCancelAllRequest {
-	r.params.GroupID = groupID
+	r.groupID = &groupID
 	return r
 }
 
 func (r *OrderCancelAllRequest) Do(ctx context.Context) (orders []Order, err error) {
-	req, err := r.client.newAuthenticatedRequest("POST", "v2/orders/clear", &r.params)
+	var payload = map[string]interface{}{}
+	if r.side != nil {
+		payload["side"] = *r.side
+	}
+	if r.market != nil {
+		payload["market"] = *r.market
+	}
+	if r.groupID != nil {
+		payload["groupID"] = *r.groupID
+	}
+
+	req, err := r.client.newAuthenticatedRequest("POST", "v2/orders/clear", payload)
 	if err != nil {
 		return
 	}