diff --git a/apps/audits/signal_handlers.py b/apps/audits/signal_handlers.py
index 9a33c2ef2..9741d93f6 100644
--- a/apps/audits/signal_handlers.py
+++ b/apps/audits/signal_handlers.py
@@ -26,9 +26,8 @@ from common.signals import django_ready
 from common.utils import get_request_ip, get_logger, get_syslogger
 from common.utils.encode import data_to_json
 from jumpserver.utils import current_request
-from terminal.backends.command.serializers import SessionCommandSerializer
 from terminal.models import Session, Command
-from terminal.serializers import SessionSerializer
+from terminal.serializers import SessionSerializer, SessionCommandSerializer
 from users.models import User
 from users.signals import post_user_change_password
 from . import models, serializers
diff --git a/apps/terminal/api/session/command.py b/apps/terminal/api/session/command.py
index 3858aca07..86d56b026 100644
--- a/apps/terminal/api/session/command.py
+++ b/apps/terminal/api/session/command.py
@@ -11,11 +11,12 @@ from terminal.filters import CommandFilter
 from orgs.utils import current_org
 from common.api import JMSBulkModelViewSet
 from common.utils import get_logger
-from terminal.backends.command.serializers import InsecureCommandAlertSerializer
+from terminal.serializers import (
+    SessionCommandSerializer,  InsecureCommandAlertSerializer
+)
 from terminal.exceptions import StorageInvalid
 from terminal.backends import (
-    get_command_storage, get_multi_command_storage,
-    SessionCommandSerializer,
+    get_command_storage, get_multi_command_storage
 )
 from terminal.notifications import CommandAlertMessage
 
diff --git a/apps/terminal/backends/__init__.py b/apps/terminal/backends/__init__.py
index 4b3dbfa5f..450cc5435 100644
--- a/apps/terminal/backends/__init__.py
+++ b/apps/terminal/backends/__init__.py
@@ -3,8 +3,6 @@ from django.conf import settings
 from django.utils.functional import LazyObject
 
 from common.utils import get_logger
-from .command.serializers import SessionCommandSerializer
-
 
 logger = get_logger(__file__)
 
diff --git a/apps/terminal/serializers/__init__.py b/apps/terminal/serializers/__init__.py
index 019c3623c..92d535c65 100644
--- a/apps/terminal/serializers/__init__.py
+++ b/apps/terminal/serializers/__init__.py
@@ -1,9 +1,10 @@
 # -*- coding: utf-8 -*-
 #
-from .terminal import *
+from .applet import *
+from .command import *
 from .session import *
 from .storage import *
 from .sharing import *
+from .terminal import *
 from .endpoint import *
-from .applet import *
 from .applet_host import *
diff --git a/apps/terminal/backends/command/serializers.py b/apps/terminal/serializers/command.py
similarity index 92%
rename from apps/terminal/backends/command/serializers.py
rename to apps/terminal/serializers/command.py
index 63920a846..e1ddba74a 100644
--- a/apps/terminal/backends/command/serializers.py
+++ b/apps/terminal/serializers/command.py
@@ -3,18 +3,20 @@ from django.utils.translation import ugettext_lazy as _
 from rest_framework import serializers
 
 from common.utils import pretty_string
-from .models import AbstractSessionCommand
+from common.serializers.fields import LabeledChoiceField
+from terminal.backends.command.models import AbstractSessionCommand
 
 __all__ = ['SessionCommandSerializer', 'InsecureCommandAlertSerializer']
 
 
 class SimpleSessionCommandSerializer(serializers.Serializer):
+
     """ 简单Session命令序列类, 用来提取公共字段 """
     user = serializers.CharField(label=_("User"))  # 限制 64 字符，见 validate_user
     asset = serializers.CharField(max_length=128, label=_("Asset"))
     input = serializers.CharField(max_length=2048, label=_("Command"))
     session = serializers.CharField(max_length=36, label=_("Session ID"))
-    risk_level = serializers.ChoiceField(
+    risk_level = LabeledChoiceField(
         required=False, label=_("Risk level"), choices=AbstractSessionCommand.RISK_LEVEL_CHOICES
     )
     org_id = serializers.CharField(