diff --git a/apps/wpm/migrations/0042_mlog_count_n_thhs.py b/apps/wpm/migrations/0042_mlog_count_n_thhs.py
new file mode 100644
index 00000000..70ca386b
--- /dev/null
+++ b/apps/wpm/migrations/0042_mlog_count_n_thhs.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2.12 on 2024-04-02 07:42
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('wpm', '0041_wmaterial_count_eweight'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='mlog',
+            name='count_n_thhs',
+            field=models.PositiveIntegerField(default=0, verbose_name='退火后碎'),
+        ),
+    ]
diff --git a/apps/wpm/models.py b/apps/wpm/models.py
index accf5d0a..bf3ca80a 100644
--- a/apps/wpm/models.py
+++ b/apps/wpm/models.py
@@ -143,6 +143,7 @@ class Mlog(CommonADModel):
     count_n_sw = models.PositiveIntegerField('水雾', default=0)
     count_n_bhpcd = models.PositiveIntegerField('壁厚偏差大', default=0)
     count_n_xzp = models.PositiveIntegerField('箱中破', default=0)
+    count_n_thhs = models.PositiveIntegerField('退火后碎', default=0)
     count_n_qt = models.PositiveIntegerField('其他', default=0)
 
     handle_date = models.DateField('操作日期')