diff --git a/CoreAgent.WebSocketTransport/Services/WebSocketTransport.cs b/CoreAgent.WebSocketTransport/Services/WebSocketTransport.cs
index eb498c2..e33eff3 100644
--- a/CoreAgent.WebSocketTransport/Services/WebSocketTransport.cs
+++ b/CoreAgent.WebSocketTransport/Services/WebSocketTransport.cs
@@ -286,8 +286,20 @@ public class WebSocketTransport : IWebSocketTransport
             {
                 if (_isConnected && _connection.IsConnected)
                 {
-                    _channelManager.PriorityChannel.TryWrite(new HeartbeatMessage());
-                    UpdateHeartbeat();
+                    // 检查发送通道是否有待发送的消息
+                    var hasPendingMessages = _channelManager.SendChannel.Count > 0;
+                    
+                    if (!hasPendingMessages)
+                    {
+                        _channelManager.PriorityChannel.TryWrite(new HeartbeatMessage());
+                        UpdateHeartbeat();
+                        _logger.LogTrace("发送心跳消息");
+                    }
+                    else
+                    {
+                        _logger.LogTrace("有待发送消息 ({MessageCount} 条)，跳过心跳发送", 
+                            _channelManager.SendChannel.Count);
+                    }
                 }
                 await Task.Delay(TimeSpan.FromSeconds(120), cancellationToken);
             }