diff --git a/agent/agent.go b/agent/agent.go
index e91ea03..72480a1 100644
--- a/agent/agent.go
+++ b/agent/agent.go
@@ -506,10 +506,13 @@ func (a *Agent) handleTasks(data json.RawMessage) {
 
 func (a *Agent) handleExecute(data json.RawMessage) {
 	var req struct {
-		TaskID  string   `json:"task_id"`
-		LogID   string   `json:"log_id"`
-		Envs    string   `json:"envs"`
-		Secrets []string `json:"secrets"`
+		TaskID      string   `json:"task_id"`
+		LogID       string   `json:"log_id"`
+		Envs        string   `json:"envs"`
+		Secrets     []string `json:"secrets"`
+		Command     string   `json:"command"`
+		PreCommand  string   `json:"pre_command"`
+		PostCommand string   `json:"post_command"`
 	}
 	if err := json.Unmarshal(data, &req); err != nil {
 		logger.Errorf("解析立即执行请求失败: %v", err)
@@ -527,26 +530,41 @@ func (a *Agent) handleExecute(data json.RawMessage) {
 	}
 
 	// 准备执行请求
-	// 如果消息中携带了环境变量，则优先使用（通常由服务端解析好后推过来）
+	// 如果消息中携带了环境变量或指令，则优先使用（确保即时生效）
 	envs := task.Envs
 	if req.Envs != "" {
 		envs = req.Envs
 	}
 
+	command := task.Command
+	if req.Command != "" {
+		command = req.Command
+	}
+
+	preCommand := task.PreCommand
+	if req.PreCommand != "" {
+		preCommand = req.PreCommand
+	}
+
+	postCommand := task.PostCommand
+	if req.PostCommand != "" {
+		postCommand = req.PostCommand
+	}
+
 	execReq := &executor.ExecutionRequest{
-		TaskID:    task.ID,
-		LogID:     req.LogID,
-		Name:      task.Name,
-		Command:     task.Command,
-		PreCommand:  task.PreCommand,
-		PostCommand: task.PostCommand,
-		WorkDir:   task.WorkDir,
-		Envs:      executor.ParseEnvVars(envs),
-		Secrets:   req.Secrets,
-		Timeout:   task.Timeout,
-		Languages: task.Languages,
-		UseMise:   task.UseMise(),
-		Type:      executor.TaskTypeManual,
+		TaskID:      task.ID,
+		LogID:       req.LogID,
+		Name:        task.Name,
+		Command:     command,
+		PreCommand:  preCommand,
+		PostCommand: postCommand,
+		WorkDir:     task.WorkDir,
+		Envs:        executor.ParseEnvVars(envs),
+		Secrets:     req.Secrets,
+		Timeout:     task.Timeout,
+		Languages:   task.Languages,
+		UseMise:     task.UseMise(),
+		Type:        executor.TaskTypeManual,
 	}
 
 	// 立即执行任务（加入队列）
diff --git a/internal/services/tasks/executor_service.go b/internal/services/tasks/executor_service.go
index 1a91ea2..02c5c54 100644
--- a/internal/services/tasks/executor_service.go
+++ b/internal/services/tasks/executor_service.go
@@ -450,11 +450,13 @@ func (es *ExecutorService) ExecuteDispatcher(ctx context.Context, req *executor.
 	// 系统任务（无 taskID）直接本地执行
 	if task == nil {
 		return executor.Execute(ctx, executor.Request{
-			Command: req.Command,
-			WorkDir: req.WorkDir,
-			Envs:    req.Envs,
-			Timeout: req.Timeout,
-			UseMise: false, // 系统任务不使用 mise
+			Command:     req.Command,
+			PreCommand:  req.PreCommand,
+			PostCommand: req.PostCommand,
+			WorkDir:     req.WorkDir,
+			Envs:        req.Envs,
+			Timeout:     req.Timeout,
+			UseMise:     false, // 系统任务不使用 mise
 		}, stdout, stderr)
 	}
 
@@ -476,12 +478,14 @@ func (es *ExecutorService) ExecuteDispatcher(ctx context.Context, req *executor.
 	// 本地任务
 	hooks := &LocalTaskHooks{es: es, logID: req.LogID}
 	return executor.ExecuteWithHooks(ctx, executor.Request{
-		Command:   req.Command,
-		WorkDir:   req.WorkDir,
-		Envs:      req.Envs,
-		Timeout:   req.Timeout,
-		Languages: []map[string]string(task.Languages),
-		UseMise:   req.UseMise, // 使用请求中的 UseMise 标志 (由调度器统一处理过)
+		Command:     req.Command,
+		PreCommand:  req.PreCommand,
+		PostCommand: req.PostCommand,
+		WorkDir:     req.WorkDir,
+		Envs:        req.Envs,
+		Timeout:     req.Timeout,
+		Languages:   []map[string]string(task.Languages),
+		UseMise:     req.UseMise, // 使用请求中的 UseMise 标志 (由调度器统一处理过)
 	}, stdout, stderr, hooks)
 }
 
@@ -1005,10 +1009,13 @@ func (es *ExecutorService) ExecuteRemoteForScheduler(task *models.Task, logID st
 
 	// 3. 发送指令
 	err := es.agentWSManager.SendToAgent(agentID, constant.WSTypeExecute, map[string]interface{}{
-		"task_id": task.ID,
-		"log_id":  logID,
-		"envs":    envs,
-		"secrets": secrets,
+		"task_id":      task.ID,
+		"log_id":       logID,
+		"envs":         envs,
+		"secrets":      secrets,
+		"command":      task.Command,
+		"pre_command":  task.PreCommand,
+		"post_command": task.PostCommand,
 	})
 	if err != nil {
 		return nil, fmt.Errorf("发送执行命令失败: %v", err)