diff --git a/apps/wpm/migrations/0077_auto_20241206_1758.py b/apps/wpm/migrations/0077_auto_20241206_1758.py
new file mode 100644
index 00000000..dba4ab67
--- /dev/null
+++ b/apps/wpm/migrations/0077_auto_20241206_1758.py
@@ -0,0 +1,28 @@
+# Generated by Django 3.2.12 on 2024-12-06 09:58
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('wpm', '0076_batchst_last_time'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='stlog',
+            name='handler',
+            field=models.CharField(blank=True, max_length=100, null=True, verbose_name='处理人'),
+        ),
+        migrations.AlterField(
+            model_name='stlog',
+            name='measure',
+            field=models.TextField(blank=True, null=True, verbose_name='处置措施'),
+        ),
+        migrations.AlterField(
+            model_name='stlog',
+            name='reason',
+            field=models.TextField(blank=True, null=True, verbose_name='事件原因'),
+        ),
+    ]
diff --git a/apps/wpm/models.py b/apps/wpm/models.py
index bc92124c..2c34b955 100644
--- a/apps/wpm/models.py
+++ b/apps/wpm/models.py
@@ -73,9 +73,9 @@ class StLog(CommonADModel):
     end_time = models.DateTimeField('结束时间', null=True, blank=True)
     duration_sec = models.PositiveIntegerField('持续时长(s)', null=True, blank=True)
     cate = models.CharField('原因类别', max_length=10, null=True, blank=True)
-    reason = models.TextField('事件原因', default='', max_length=100)
-    measure = models.TextField('处置措施', default='', max_length=100)
-    handler = models.CharField('处理人', default='', max_length=100)
+    reason = models.TextField('事件原因', null=True, blank=True)
+    measure = models.TextField('处置措施', null=True, blank=True)
+    handler = models.CharField('处理人', null=True, blank=True, max_length=100)
 
     class Meta:
         unique_together = ('mgroup', 'start_time')