diff --git a/server/websocket/internal/logic/ws_render_image_logic.go b/server/websocket/internal/logic/ws_render_image_logic.go
index 3d4f42c5..7e44e43d 100644
--- a/server/websocket/internal/logic/ws_render_image_logic.go
+++ b/server/websocket/internal/logic/ws_render_image_logic.go
@@ -34,9 +34,9 @@ func (w *wsConnectItem) sendToRenderChan(data []byte) {
 	select {
 	case <-w.closeChan: //已经关闭
 		return
-	case w.renderProperty.renderChan <- data:
+	case w.renderProperty.renderChan <- data: //发入到缓冲池
 		return
-	case <-time.After(time.Second * 3):
+	case <-time.After(time.Second * 3): //三秒没进入缓冲池就丢弃
 		return
 	}
 }
@@ -296,15 +296,17 @@ func (w *wsConnectItem) assembleRenderData(taskId string, info websocket_data.Re
 func (w *wsConnectItem) operationRenderTask() {
 	for {
 		select {
-		case <-w.closeChan:
+		case <-w.closeChan: //整个链接关闭
 			return
-		case data := <-w.renderProperty.renderImageTaskCtlChan:
+		case data := <-w.renderProperty.renderImageTaskCtlChan: //处理任务
 			switch data.Option {
 			case 0: //删除任务
 				delete(w.renderProperty.renderImageTask, data.TaskId)
 			case 1: //新增任务
 				w.renderProperty.renderImageTask[data.TaskId] = data.RenderId
 			}
+		case <-time.After(time.Second * 3): //三秒阻塞则丢弃
+			return
 		}
 	}
 }