diff --git a/lib/cli/commands/scheduler/scheduler_manager.dart b/lib/cli/commands/scheduler/scheduler_manager.dart
index 9ff0665..93b32e6 100644
--- a/lib/cli/commands/scheduler/scheduler_manager.dart
+++ b/lib/cli/commands/scheduler/scheduler_manager.dart
@@ -109,10 +109,15 @@ class SchedulerManager {
       return throw Exception("There is no scheduler called '$alias'.");
     }
 
+    await checkTerminate();
+  }
+
+  Future checkTerminate() async {
     if(schedulers.isEmpty) {
-      await terminate();
       await unregistStartup();
+      await terminate();
     }
+    return simpleFuture;
   }
 
   Future showList() async {
@@ -156,10 +161,6 @@ class SchedulerManager {
     return simpleFuture;
   }
 
-  Future checkSchedules() async {
-    return simpleFuture;
-  }
-
   Future checkProcess() async {
     //process check
     var processes = await findProcess('scheduler -s');
@@ -205,15 +206,16 @@ class SchedulerManager {
   }
 
   //======================== other process ========================//
-  final logFile = File('$logsPath/scheduler.txt');
+  final logFile = File('$logsPath/scheduler_${getDate()}_${getTime().replaceAll(':', '')}_[$pid].txt');
   Future start() async {
+    log('Scheduler is running on pid [$pid].');
     while(true) {
       //매초 마다 등록된 파일이 있나 체크
       await Future.delayed(Duration(seconds: 1));
       var scheduleList = schedulers;
       for(var alias in scheduleList) {
         if(!_map.containsKey(alias)) {
-          await logFile.writeAsString('Schduler started: $alias\n', mode: FileMode.append);
+          log('Schduler started: $alias');
           var handler = IsolateManager.create(IsolateScheduler({'alias': alias, 'root': schedulerPath, 'logs': logsPath}));
           //To-do: 종료시 사유(by user, by error)에 따라 json에 내용을 기입하여 재실행 안하도록
           handler.addListener('terminated', onTerminated );
@@ -223,12 +225,29 @@ class SchedulerManager {
     }
   }
 
-  void onTerminated(Object? data) {
+  void onTerminated(Object? data) async {
     var map = data as Map;
-    var alias = data['alias'] as String;
-    var type = data['type'] as String;
-    var message = data['message'] as String;
-    _map.remove(alias);
+    var alias = map['alias'] as String;
+    var type = map['type'] as String;
+    var message = map['message'] as String;
+    var handler = _map.remove(alias);
+    handler!.exit();
+    switch(type) {
+      case 'error':
+        log('[Error] $message');
+        break;
+    }
+
+    if(schedulers.isEmpty) log('Scheduler operation stopped.');
+    await checkTerminate();
+  }
+
+  void log(String message) {
+    logFile.writeAsStringSync('[${getDates()}] $message\n', mode: FileMode.append, flush: true);
+  }
+
+  void logError(Exception e, StackTrace stacktace) {
+    log('[${e.toString()}]\n${stacktace.toString()}');
   }
 }
 
@@ -304,6 +323,7 @@ class IsolateScheduler extends IsolateBase {
       } else {
         //file이 없을시 종료
         onError("The file '${file.path}' does not exist.");
+        if(cron != null) await cron?.close();
         return;
       }
     }
@@ -311,9 +331,9 @@ class IsolateScheduler extends IsolateBase {
 
   Future execute(DataBuild data) async {
     notProgress = false;
-    logFile = File('$logsPath/${alias}_${getDate()}_${getTime().replaceAll(':', '.')}.txt');
-    log('Execute task: ${DateTime.now().toString()}');
-    await Future.delayed(Duration(minutes: 1, seconds: 30));
+    logFile = File('$logsPath/${alias}_${getDate()}_${getTime().replaceAll(':', '')}_[$pid].txt');
+    log('Start process on pid [$pid]');
+    await Future.delayed(Duration(minutes: 1, seconds: 30)); //To-do: delete test, exe task
     notProgress = true;
     return simpleFuture;
   }