diff --git a/cim-server-sdk/src/main/java/com/farsunset/cim/acceptor/NioSocketAcceptor.java b/cim-server-sdk/src/main/java/com/farsunset/cim/acceptor/NioSocketAcceptor.java
index 066adf3..1356373 100644
--- a/cim-server-sdk/src/main/java/com/farsunset/cim/acceptor/NioSocketAcceptor.java
+++ b/cim-server-sdk/src/main/java/com/farsunset/cim/acceptor/NioSocketAcceptor.java
@@ -174,7 +174,7 @@ abstract class NioSocketAcceptor extends SimpleChannelInboundHandler<SentBody>{
 		}
 
 		/*
-		 * 如果心跳请求发出15秒内没收到响应，则关闭连接
+		 * 如果心跳请求发出（readIdle-writeIdle）秒内没收到响应，则关闭连接
 		 */
 		Integer pingCount = ctx.channel().attr(ChannelAttr.PING_COUNT).get();
 		if (idleEvent.state() == IdleState.READER_IDLE && pingCount != null && pingCount >= PONG_TIME_OUT_COUNT) {