diff --git a/account/management/__init__.py b/account/management/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/account/management/commands/__init__.py b/account/management/commands/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/account/management/commands/clean_deleted_problems.py b/account/management/commands/clean_deleted_problems.py
new file mode 100644
index 0000000..6fc4410
--- /dev/null
+++ b/account/management/commands/clean_deleted_problems.py
@@ -0,0 +1,71 @@
+from django.core.management.base import BaseCommand
+
+from account.models import UserProfile
+from problem.models import Problem
+from submission.models import JudgeStatus
+
+
+ACCEPTED_STATUSES = {JudgeStatus.ACCEPTED, JudgeStatus.AST_CHECK_FAILED}
+
+
+class Command(BaseCommand):
+    help = "从用户 Profile 中移除已被删除的题目记录，并同步修正 accepted_number"
+
+    def add_arguments(self, parser):
+        parser.add_argument("--dry-run", action="store_true", help="只检查，不写入数据库")
+
+    def handle(self, *args, **options):
+        dry_run = options["dry_run"]
+
+        # 所有现存非比赛题目的 PK 集合
+        existing_ids = set(
+            Problem.objects.filter(contest__isnull=True).values_list("id", flat=True)
+        )
+        self.stdout.write(f"现存题库题目数: {len(existing_ids)}")
+
+        profiles = UserProfile.objects.select_related("user").exclude(
+            acm_problems_status={}
+        )
+        total = profiles.count()
+        self.stdout.write(f"检查用户数: {total}{'（dry-run 模式）' if dry_run else ''}")
+
+        fixed_count = 0
+        for profile in profiles:
+            problems = profile.acm_problems_status.get("problems", {})
+            if not problems:
+                continue
+
+            stale_keys = [k for k in problems if int(k) not in existing_ids]
+            if not stale_keys:
+                continue
+
+            removed_accepted = sum(
+                1
+                for k in stale_keys
+                if problems[k].get("status") in ACCEPTED_STATUSES
+            )
+
+            stale_display = [problems[k].get("_id", k) for k in stale_keys]
+            self.stdout.write(
+                f"  用户 {profile.user.username}"
+                f" | 删除 {len(stale_keys)} 题: {', '.join(stale_display)}"
+                f"{f' | 其中已AC {removed_accepted} 题' if removed_accepted else ''}"
+            )
+
+            if dry_run:
+                continue
+
+            for k in stale_keys:
+                del profile.acm_problems_status["problems"][k]
+
+            if removed_accepted:
+                # 防止 accepted_number 变为负数
+                profile.accepted_number = max(0, profile.accepted_number - removed_accepted)
+
+            profile.save(update_fields=["acm_problems_status", "accepted_number"])
+            fixed_count += 1
+
+        if dry_run:
+            self.stdout.write(self.style.WARNING("dry-run 完成，未写入任何数据"))
+        else:
+            self.stdout.write(self.style.SUCCESS(f"完成，共修复 {fixed_count} 个用户 Profile"))