diff --git a/webrtc/Nack.h b/webrtc/Nack.h
index 4757a2a2..761c618d 100644
--- a/webrtc/Nack.h
+++ b/webrtc/Nack.h
@@ -40,13 +40,13 @@ public:
     using Ptr = std::shared_ptr<NackContext>;
     using onNack = std::function<void(const mediakit::FCI_NACK &nack)>;
     //最大保留的rtp丢包状态个数
-    static constexpr auto kNackMaxSize = 1024;
+    static constexpr auto kNackMaxSize = 2048;
     //rtp丢包状态最长保留时间
     static constexpr auto kNackMaxMS = 3 * 1000;
     //nack最多请求重传10次
     static constexpr auto kNackMaxCount = 10;
     //nack重传频率，rtt的倍数
-    static constexpr auto kNackIntervalRatio = 2.0f;
+    static constexpr auto kNackIntervalRatio = 1.0f;
 
     NackContext() = default;
     ~NackContext() = default;