diff --git a/pkg/bbgo/session.go b/pkg/bbgo/session.go
index 207203faa4..6337f09806 100644
--- a/pkg/bbgo/session.go
+++ b/pkg/bbgo/session.go
@@ -78,6 +78,9 @@ type ExchangeSession struct {
 
 	IsInitialized bool `json:"-" yaml:"-"`
 
+	// OrderExecutor is the default order executor for the session
+	//
+	// Deprecated: use GeneralOrderExecutor instead
 	OrderExecutor *ExchangeOrderExecutor `json:"orderExecutor,omitempty" yaml:"orderExecutor,omitempty"`
 
 	// UserDataStream is the connection stream of the exchange