diff --git a/lock_free/queues.go b/lock_free/queues.go
index 5db1ff8..5a2d5f9 100644
--- a/lock_free/queues.go
+++ b/lock_free/queues.go
@@ -1,7 +1,6 @@
 package lock_free
 
 import (
-	"fmt"
 	"iter"
 	"sync"
 	"time"
@@ -84,7 +83,6 @@ func (q *Queues[TKey, TValue, TRoute]) makeAckData(route TRoute, value TValue, v
 
 				case <-time.After(q.expireAutoFail):
 					// 重新入队
-					fmt.Println("ack timeout")
 					queue.(*DelayLkQueue[TKey, TValue]).Enqueue(value)
 				}
 			}