diff --git a/apps/wpm/migrations/0043_alter_stlog_unique_together.py b/apps/wpm/migrations/0043_alter_stlog_unique_together.py
new file mode 100644
index 00000000..c796db36
--- /dev/null
+++ b/apps/wpm/migrations/0043_alter_stlog_unique_together.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2.12 on 2024-05-13 15:05
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mtm', '0028_shift_sort'),
+        ('wpm', '0042_mlog_count_n_thhs'),
+    ]
+
+    operations = [
+        migrations.AlterUniqueTogether(
+            name='stlog',
+            unique_together={('mgroup', 'start_time')},
+        ),
+    ]
diff --git a/apps/wpm/models.py b/apps/wpm/models.py
index 074a8dc5..098f7b13 100644
--- a/apps/wpm/models.py
+++ b/apps/wpm/models.py
@@ -65,6 +65,10 @@ class StLog(CommonADModel):
     measure = models.TextField('处置措施', default='', max_length=100)
     handler = models.CharField('处理人', default='', max_length=100)
 
+    class Meta:
+        unique_together = ('mgroup', 'start_time')
+
+
 
 class SfLogExp(CommonADModel):
     """