diff --git a/account/migrations/0008_remove_userprofile_oi_problems_status_and_more.py b/account/migrations/0008_remove_userprofile_oi_problems_status_and_more.py
new file mode 100644
index 0000000..34ba13b
--- /dev/null
+++ b/account/migrations/0008_remove_userprofile_oi_problems_status_and_more.py
@@ -0,0 +1,21 @@
+# Generated by Django 6.0.4 on 2026-07-04 17:32
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('account', '0007_rename_admin_to_student_admin'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='userprofile',
+            name='oi_problems_status',
+        ),
+        migrations.RemoveField(
+            model_name='userprofile',
+            name='total_score',
+        ),
+    ]
diff --git a/account/models.py b/account/models.py
index 4a64ae6..35ecf07 100644
--- a/account/models.py
+++ b/account/models.py
@@ -108,8 +108,6 @@ class UserProfile(models.Model):
     #     }
     # }
     acm_problems_status = JSONField(default=dict, db_default=models.Value({}, output_field=models.JSONField()))
-    # like acm_problems_status, merely add "score" field
-    oi_problems_status = JSONField(default=dict, db_default=models.Value({}, output_field=models.JSONField()))
 
     real_name = models.TextField(null=True)
     avatar = models.TextField(default=f"{settings.AVATAR_URI_PREFIX}/default.png")
@@ -119,10 +117,7 @@ class UserProfile(models.Model):
     school = models.TextField(null=True)
     major = models.TextField(null=True)
     language = models.TextField(null=True)
-    # for ACM
     accepted_number = models.IntegerField(default=0, db_default=0)
-    # for OI
-    total_score = models.BigIntegerField(default=0, db_default=0)
     submission_number = models.IntegerField(default=0, db_default=0)
 
     def add_accepted_problem_number(self):
@@ -133,11 +128,5 @@ class UserProfile(models.Model):
         self.submission_number = models.F("submission_number") + 1
         self.save(update_fields=["submission_number"])
 
-    # 计算总分时， 应先减掉上次该题所得分数， 然后再加上本次所得分数
-    def add_score(self, this_time_score, last_time_score=None):
-        last_time_score = last_time_score or 0
-        self.total_score = models.F("total_score") - last_time_score + this_time_score
-        self.save(update_fields=["total_score"])
-
     class Meta:
         db_table = "user_profile"
diff --git a/account/views/oj.py b/account/views/oj.py
index 5ccd7f7..51ff3b9 100644
--- a/account/views/oj.py
+++ b/account/views/oj.py
@@ -517,17 +517,14 @@ class ProfileProblemDisplayIDRefreshAPI(AsyncAPIView):
     async def get(self, request):
         profile = await UserProfile.objects.aget(user=request.user)
         acm_problems = profile.acm_problems_status.get("problems", {})
-        oi_problems = profile.oi_problems_status.get("problems", {})
-        ids = list(acm_problems.keys()) + list(oi_problems.keys())
+        ids = list(acm_problems.keys())
         if not ids:
             return self.success()
         display_ids = [did async for did in Problem.objects.filter(id__in=ids, visible=True).values_list("_id", flat=True)]
         id_map = dict(zip(ids, display_ids))
         for k, v in acm_problems.items():
             v["_id"] = id_map[k]
-        for k, v in oi_problems.items():
-            v["_id"] = id_map[k]
-        await profile.asave(update_fields=["acm_problems_status", "oi_problems_status"])
+        await profile.asave(update_fields=["acm_problems_status"])
         return self.success()