diff --git a/backend/apps/fields/migrations/0002_field_raw_chusankan_id_field_raw_kyosai_k_num_and_more.py b/backend/apps/fields/migrations/0002_field_raw_chusankan_id_field_raw_kyosai_k_num_and_more.py
new file mode 100644
index 0000000..4251698
--- /dev/null
+++ b/backend/apps/fields/migrations/0002_field_raw_chusankan_id_field_raw_kyosai_k_num_and_more.py
@@ -0,0 +1,28 @@
+# Generated by Django 5.0 on 2026-02-15 02:50
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('fields', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='field',
+            name='raw_chusankan_id',
+            field=models.CharField(blank=True, max_length=20, null=True, verbose_name='中山間_ID'),
+        ),
+        migrations.AddField(
+            model_name='field',
+            name='raw_kyosai_k_num',
+            field=models.CharField(blank=True, max_length=20, null=True, verbose_name='細目_耕地番号'),
+        ),
+        migrations.AddField(
+            model_name='field',
+            name='raw_kyosai_s_num',
+            field=models.CharField(blank=True, max_length=20, null=True, verbose_name='細目_分筆番号'),
+        ),
+    ]
diff --git a/backend/apps/fields/models.py b/backend/apps/fields/models.py
index eb48eaf..416066d 100644
--- a/backend/apps/fields/models.py
+++ b/backend/apps/fields/models.py
@@ -39,6 +39,9 @@ class Field(models.Model):
     area_tan = models.DecimalField(max_digits=6, decimal_places=4, verbose_name="面積(反)")
     area_m2 = models.IntegerField(verbose_name="面積(m2)")
     owner_name = models.CharField(max_length=100, verbose_name="所有者名")
+    raw_kyosai_k_num = models.CharField("細目_耕地番号", max_length=20, null=True, blank=True)
+    raw_kyosai_s_num = models.CharField("細目_分筆番号", max_length=20, null=True, blank=True)
+    raw_chusankan_id = models.CharField("中山間_ID", max_length=20, null=True, blank=True)
     kyosai_field = models.ForeignKey(
         OfficialKyosaiField,
         on_delete=models.SET_NULL,