diff --git a/account/models.py b/account/models.py
index 395ff8df..e91ea3fd 100644
--- a/account/models.py
+++ b/account/models.py
@@ -82,5 +82,9 @@ class UserProfile(models.Model):
         self.submission_number += 1
         self.save(update_fields=["submission_number"])
 
+    def minus_accepted_problem_number(self):
+        self.accepted_problem_number -= 1
+        self.save(update_fields=["accepted_problem_number"])
+
     class Meta:
         db_table = "user_profile"
diff --git a/judge_dispatcher/tasks.py b/judge_dispatcher/tasks.py
index 6f57abcf..5fab390f 100644
--- a/judge_dispatcher/tasks.py
+++ b/judge_dispatcher/tasks.py
@@ -138,6 +138,10 @@ class JudgeDispatcher(object):
             if problems_status["problems"].get(str(problem.id), -1) != 1 and self.submission.result == result["accepted"]:
                 user.userprofile.add_accepted_problem_number()
 
+            # 之前状态是ac, 现在不是ac了 需要用户ac题目数量计数器-1, 否则上一个逻辑胡重复增加ac计数器
+            if problems_status["problems"].get(str(problem.id), -1) == 1 and self.submission.result != result["accepted"]:
+                user.userprofile.minus_accepted_problem_number()
+
             if self.submission.result == result["accepted"]:
                 problem.add_ac_number()
                 problems_status["problems"][str(problem.id)] = 1