diff --git a/logging/slog/logger.go b/logging/slog/logger.go
index d5d4f86..8f19bf8 100644
--- a/logging/slog/logger.go
+++ b/logging/slog/logger.go
@@ -17,7 +17,48 @@ func NewWriter(opts ...Option) *Writer {
 	for _, opt := range opts {
 		opt.apply(cfg)
 	}
+	// When user set the handlerOptions level but not set with coreconfig level
+	if !cfg.coreConfig.withLevel && cfg.coreConfig.withHandlerOptions && cfg.coreConfig.opt.Level != nil {
+		lvl := &slog.LevelVar{}
+		lvl.Set(cfg.coreConfig.opt.Level.Level())
+		cfg.coreConfig.level = lvl
+	}
+	cfg.coreConfig.opt.Level = cfg.coreConfig.level
+
+	var replaceAttrDefined bool
+	if cfg.coreConfig.opt.ReplaceAttr == nil {
+		replaceAttrDefined = false
+	} else {
+		replaceAttrDefined = true
+	}
 
+	replaceFunc := cfg.coreConfig.opt.ReplaceAttr
+
+	replaceAttr := func(groups []string, a slog.Attr) slog.Attr {
+		// default replaceAttr level
+		if a.Key == slog.LevelKey {
+			level := a.Value.Any().(slog.Level)
+			switch level {
+			case slog.LevelDebug:
+				a.Value = slog.StringValue("Debug")
+			case slog.LevelInfo:
+				a.Value = slog.StringValue("Info")
+			case slog.LevelWarn:
+				a.Value = slog.StringValue("Warn")
+			case slog.LevelError:
+				a.Value = slog.StringValue("Error")
+			default:
+				a.Value = slog.StringValue("Warn")
+			}
+		}
+		// append replaceAttr by user
+		if replaceAttrDefined {
+			return replaceFunc(groups, a)
+		} else {
+			return a
+		}
+	}
+	cfg.coreConfig.opt.ReplaceAttr = replaceAttr
 	logger := slog.New(NewTraceHandler(cfg.coreConfig.writer, cfg.coreConfig.opt, cfg.traceConfig))
 
 	return &Writer{log: logger, config: cfg}