diff --git a/sandbox/config.go b/sandbox/config.go
index 906a792e8fce4bd1ff3b5121864f0a375c01295b..55c9677dca88dd12212f26dd05168b7d6e9f380f 100644
--- a/sandbox/config.go
+++ b/sandbox/config.go
@@ -80,6 +80,21 @@ func initConfig() error {
 		},
 	}
 
+	if len(os.Args) > 9 {
+		sendSize, err := strconv.Atoi(os.Args[8])
+		sendByteSize := sendSize * 1024 * 1024
+		if err == nil {
+			config.ContractEngineClient.MaxSendMsgSize = sendByteSize
+			config.RuntimeClient.MaxSendMsgSize = sendByteSize
+		}
+		recvSize, err := strconv.Atoi(os.Args[9])
+		recvByteSize := recvSize * 1024 * 1024
+		if err == nil {
+			config.ContractEngineClient.MaxRecvMsgSize = recvByteSize
+			config.RuntimeClient.MaxRecvMsgSize = recvByteSize
+		}
+	}
+
 	port, err := strconv.Atoi(os.Args[5])
 	if err != nil {
 		return err