diff --git a/apps/hrm/serializers.py b/apps/hrm/serializers.py
index 706e4886..6566aa4a 100755
--- a/apps/hrm/serializers.py
+++ b/apps/hrm/serializers.py
@@ -3,6 +3,7 @@ from rest_framework.serializers import ModelSerializer
 from rest_framework import serializers
 from apps.hrm.services import HrmService
 
+
 from apps.utils.serializers import CustomModelSerializer
 from apps.utils.constants import EXCLUDE_FIELDS, EXCLUDE_FIELDS_BASE
 from apps.utils.tools import rannum
@@ -101,12 +102,19 @@ class EmployeeSerializer(EmployeeBaseSerializer):
     belong_dept_ = DeptSimpleSerializer(source='belong_dept', read_only=True)
     belong_dept_name = serializers.CharField(source='belong_dept.name', read_only=True)
     post_name = serializers.CharField(source='post.name', read_only=True)
+    blt_ = serializers.SerializerMethodField()
 
     class Meta:
         model = Employee
         fields = '__all__'
         read_only_fields = ['is_atwork', 'last_check_time', 'not_work_remark']
 
+    def get_blt_(self, obj):
+        if hasattr(obj, 'tdevice'):
+            from apps.third.serializers import TDeviceSimpleSerializer
+            return TDeviceSimpleSerializer(instance=obj.tdevice).data
+        return
+
 
 class EmployeeNotWorkRemarkSerializer(ModelSerializer):
     class Meta:
diff --git a/apps/third/migrations/0005_alter_tdevice_employee.py b/apps/third/migrations/0005_alter_tdevice_employee.py
new file mode 100644
index 00000000..b23ed41c
--- /dev/null
+++ b/apps/third/migrations/0005_alter_tdevice_employee.py
@@ -0,0 +1,20 @@
+# Generated by Django 3.2.12 on 2022-07-11 02:40
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('hrm', '0003_employee_post'),
+        ('third', '0004_auto_20220707_0957'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='tdevice',
+            name='employee',
+            field=models.OneToOneField(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='hrm.employee', verbose_name='当前绑定人员'),
+        ),
+    ]
diff --git a/apps/third/models.py b/apps/third/models.py
index 1b8a7d87..c2e97c95 100755
--- a/apps/third/models.py
+++ b/apps/third/models.py
@@ -40,8 +40,8 @@ class TDevice(BaseModel):
     areas = models.ManyToManyField(Area, verbose_name='覆盖区',
                                    related_name='tareas')
     obj_cate = models.CharField('绑定对象', max_length=20, help_text='people/...', null=True, blank=True)
-    employee = models.ForeignKey(Employee, verbose_name='当前绑定人员', on_delete=models.CASCADE,
-                                 null=True, blank=True, related_name='td_employee')
+    employee = models.OneToOneField(Employee, verbose_name='当前绑定人员', on_delete=models.CASCADE,
+                                    null=True, blank=True)
     is_clock = models.BooleanField('是否打卡设备', default=False)
     third_info = models.JSONField('三方信息', default=dict,
                                   null=False, blank=True)