diff --git a/simplelog/simplelog.go b/simplelog/simplelog.go
index 8eb3d4b..8afa526 100644
--- a/simplelog/simplelog.go
+++ b/simplelog/simplelog.go
@@ -73,7 +73,7 @@ func (l *Logger) PrintLog(level LogLevel, log string) {
 			file := l.w.(*os.File)
 			info, _ := file.Stat()
 			currentSize := uint64(info.Size())
-			if currentSize < l.splitSize {
+			if l.splitSize == 0 || currentSize < l.splitSize {
 				break
 			} else {
 				_ = file.Close()
@@ -193,7 +193,7 @@ func WithSplitSize(size uint64) OptionFunc {
 var defaultOption = &Option{
 	Writer:     os.Stdout,
 	TimeFormat: "2006-01-02 15:04:05.99",
-	LogFormat:  "%-22s %s %v --- [%20s] : %s\n",
+	LogFormat:  "%-22s %-5s %v --- [%20s] : %s\n",
 	LevelFlag:  FlagInfo | FlagWarn | FlagError | FlagDebug,
 	LogFile:    "",
 	SplitSize:  0,