diff --git a/log/logsdk/logjson/option.go b/log/logsdk/logjson/option.go
index 8a22402..2929c8d 100644
--- a/log/logsdk/logjson/option.go
+++ b/log/logsdk/logjson/option.go
@@ -60,10 +60,10 @@ func newConfig(opts ...Option) *config {
 		opt.apply(cfg)
 	}
 	if !cfg.hasPool {
-		cfg.bytesBufferPool = newBytesBufferPool(512, 4096)
+		cfg.bytesBufferPool = NewBytesBufferPool(512, 4096)
 	}
 	if cfg.output == nil {
-		cfg.output = newSyncWriter(os.Stderr)
+		cfg.output = NewSyncWriter(os.Stderr)
 	}
 	if cfg.timestampFormat == "" {
 		cfg.timestampFormat = time.RFC3339Nano
diff --git a/log/logsdk/logjson/pool.go b/log/logsdk/logjson/pool.go
index cd99492..7b3bc5b 100644
--- a/log/logsdk/logjson/pool.go
+++ b/log/logsdk/logjson/pool.go
@@ -10,7 +10,8 @@ type BytesBufferPool interface {
 	Put(buffer *bytes.Buffer)
 }
 
-func newBytesBufferPool(initialSize, maximumSize int) *bytesBufferPool {
+// NewBytesBufferPool 创建并返回 BytesBufferPool
+func NewBytesBufferPool(initialSize, maximumSize int) BytesBufferPool {
 	return &bytesBufferPool{
 		pool: sync.Pool{
 			New: func() any {
diff --git a/log/logsdk/logjson/writer.go b/log/logsdk/logjson/writer.go
index fd52d1f..bda4a62 100644
--- a/log/logsdk/logjson/writer.go
+++ b/log/logsdk/logjson/writer.go
@@ -5,7 +5,8 @@ import (
 	"sync"
 )
 
-func newSyncWriter(writer io.Writer) io.Writer {
+// NewSyncWriter 返回写互斥的 io.Writer
+func NewSyncWriter(writer io.Writer) io.Writer {
 	return &syncWriter{
 		writer: writer,
 		lock:   sync.Mutex{},