diff --git a/node/node.go b/node/node.go
index 21ad322..d1ba6e8 100644
--- a/node/node.go
+++ b/node/node.go
@@ -58,7 +58,7 @@ func init() {
 	console.RegisterCommandString("loglevel", "debug", "<-loglevel debug|release|warning|error|fatal> Set loglevel.", setLevel)
 	console.RegisterCommandString("logpath", "", "<-logpath path> Set log file path.", setLogPath)
 	console.RegisterCommandInt("logsize", 0, "<-logsize size> Set log size(MB).", setLogSize)
-	console.RegisterCommandInt("logchannelcap", 0, "<-logchannelcap num> Set log channel cap.", setLogChannelCapNum)
+	console.RegisterCommandInt("logchannelcap", -1, "<-logchannelcap num> Set log channel cap.", setLogChannelCapNum)
 	console.RegisterCommandString("pprof", "", "<-pprof ip:port> Open performance analysis.", setPprof)
 }
 
@@ -506,6 +506,10 @@ func setLogChannelCapNum(args interface{}) error {
 		return errors.New("param logsize is error")
 	}
 
+	if logChannelCap == -1 {
+		return nil
+	}
+
 	log.LogChannelCap = logChannelCap
 	return nil
 }