diff --git a/server/websocket/internal/logic/datatransferlogic.go b/server/websocket/internal/logic/datatransferlogic.go
index b4ffae61..74f14691 100644
--- a/server/websocket/internal/logic/datatransferlogic.go
+++ b/server/websocket/internal/logic/datatransferlogic.go
@@ -103,8 +103,8 @@ func (l *DataTransferLogic) DataTransfer(svcCtx *svc.ServiceContext, w http.Resp
 		conn:      conn,
 		uniqueId:  uniqueId,
 		closeChan: make(chan struct{}, 1),
-		inChan:    make(chan []byte, 100),
-		outChan:   make(chan []byte, 100),
+		inChan:    make(chan []byte, 1000),
+		outChan:   make(chan []byte, 1000),
 		renderProperty: renderProperty{
 			renderImageTask:        make(map[string]struct{}),
 			renderImageTaskCtlChan: make(chan renderImageControlChanItem, 100),