diff --git a/ncmd/cmd.go b/ncmd/cmd.go
index e87702b..f1820a0 100644
--- a/ncmd/cmd.go
+++ b/ncmd/cmd.go
@@ -47,12 +47,13 @@ type Cmd struct {
 	*Options
 
 	// Runtime
-	Cmd   *exec.Cmd      // CMD
-	Name  string         // name of binary(command) to run
-	Args  []string       // arguments
-	Env   []string       // *optional environment
-	Dir   string         // working dir
-	stdIn io.WriteCloser // 标准输入通道
+	Cmd     *exec.Cmd      // CMD
+	Name    string         // name of binary(command) to run
+	Args    []string       // arguments
+	Env     []string       // *optional environment
+	Dir     string         // working dir
+	Session *Session       // 数据存储
+	stdIn   io.WriteCloser // 标准输入通道
 
 	stdoutStream *OutputStream // 标准输出通道
 	stderrStream *OutputStream // 标准错误输出通道
@@ -96,6 +97,7 @@ func NewCmd(opts ...Option) *Cmd {
 			Buffered: true,
 			DevMode:  true,
 		},
+		Session: NewSession(0),
 		// flags
 		started:  false,
 		stopped:  false,
@@ -244,6 +246,16 @@ func (c *Cmd) Stopped() bool {
 	return c.stopped
 }
 
+// Clone 克隆一个 Cmd 示例，所有配置转置
+// Cmd 是一个一次性用途的实例，要重启首先需要克隆
+func (c *Cmd) Clone() *Cmd {
+	clone := NewCmd(WithOptions(c.Options))
+	clone.Dir = c.Dir
+	clone.Env = c.Env
+
+	return clone
+}
+
 func (c *Cmd) run() {
 	defer func() {
 		c.statusChan <- c.Status()
diff --git a/ncmd/session.go b/ncmd/session.go
new file mode 100644
index 0000000..a30a040
--- /dev/null
+++ b/ncmd/session.go
@@ -0,0 +1,93 @@
+package ncmd
+
+import "sync"
+
+type Session struct {
+	id   int64          // 唯一ID
+	data map[string]any // 数据存储
+
+	*sync.RWMutex
+}
+
+func NewSession(id int64) *Session {
+	return &Session{
+		id:      id,
+		data:    make(map[string]any),
+		RWMutex: &sync.RWMutex{},
+	}
+}
+
+func (s *Session) Id() int64 {
+	return s.id
+}
+
+func (s *Session) SetId(id int64) {
+	s.id = id
+}
+
+// Attribute 获取指定key对应参数
+func (s *Session) Attribute(key string) any {
+	s.RLock()
+	defer s.RUnlock()
+
+	return s.data[key]
+}
+
+// Keys 获取所有参数key
+func (s *Session) Keys() []string {
+	s.RLock()
+	defer s.RUnlock()
+
+	keys := make([]string, 0, len(s.data))
+	for k := range s.data {
+		keys = append(keys, k)
+	}
+	return keys
+}
+
+// Exists 指定key是否存在
+func (s *Session) Exists(key string) bool {
+	s.RLock()
+	defer s.RUnlock()
+
+	_, has := s.data[key]
+	return has
+}
+
+// Attributes 获取所有参数
+func (s *Session) Attributes() map[string]any {
+	s.RLock()
+	defer s.RUnlock()
+
+	return s.data
+}
+
+// RemoveAttribute 移除指定key对应参数
+func (s *Session) RemoveAttribute(key string) {
+	s.Lock()
+	defer s.Unlock()
+
+	delete(s.data, key)
+}
+
+// SetAttribute 设置参数
+func (s *Session) SetAttribute(key string, value any) {
+	s.Lock()
+	defer s.Unlock()
+
+	s.data[key] = value
+}
+
+// Invalidate 清理
+func (s *Session) Invalidate() {
+	s.Lock()
+	defer s.Unlock()
+
+	s.id = 0
+	s.data = make(map[string]any)
+}
+
+// Close 关闭
+func (s *Session) Close() {
+	s.Invalidate()
+}