diff --git a/problemset/models.py b/problemset/models.py
index d148cba..e419eb8 100644
--- a/problemset/models.py
+++ b/problemset/models.py
@@ -168,6 +168,18 @@ class ProblemSetProgress(models.Model):
         )
         self.total_problems_count = problemset_problems.count()
 
+        # 获取当前题单中所有题目的ID集合
+        current_problem_ids = {str(psp.problem.id) for psp in problemset_problems}
+        
+        # 清理已删除题目的进度记录
+        progress_detail_to_remove = []
+        for problem_id in self.progress_detail.keys():
+            if problem_id not in current_problem_ids:
+                progress_detail_to_remove.append(problem_id)
+        
+        for problem_id in progress_detail_to_remove:
+            del self.progress_detail[problem_id]
+
         # 计算已完成题目数
         completed_count = 0
         total_score = 0
@@ -177,7 +189,8 @@ class ProblemSetProgress(models.Model):
             if problem_id in self.progress_detail:
                 problem_progress = self.progress_detail[problem_id]
                 completed_count += 1
-                total_score += problem_progress.get("score", 0)
+                total_score += psp.score
+                problem_progress["score"] = psp.score
 
         self.completed_problems_count = completed_count
         self.total_score = total_score
diff --git a/problemset/serializers.py b/problemset/serializers.py
index a98a587..7eda797 100644
--- a/problemset/serializers.py
+++ b/problemset/serializers.py
@@ -214,10 +214,30 @@ class ProblemSetProgressSerializer(serializers.ModelSerializer):
 
     problemset = ProblemSetListSerializer()
     user = UsernameSerializer()
+    completed_problems = serializers.SerializerMethodField()
 
     class Meta:
         model = ProblemSetProgress
         fields = "__all__"
+    
+    def get_completed_problems(self, obj):
+        """获取已完成的题目列表"""
+        from problem.models import Problem
+        
+        completed_problems = []
+        if obj.progress_detail:
+            for problem_id in obj.progress_detail.keys():
+                try:
+                    problem = Problem.objects.get(id=problem_id)
+                    completed_problems.append({
+                        'id': problem.id,
+                        '_id': problem._id,
+                        'title': problem.title
+                    })
+                except Problem.DoesNotExist:
+                    continue
+        
+        return completed_problems
 
 
 class UserBadgeSerializer(serializers.ModelSerializer):
diff --git a/problemset/signals.py b/problemset/signals.py
index 6cbfb64..265fe82 100644
--- a/problemset/signals.py
+++ b/problemset/signals.py
@@ -21,8 +21,13 @@ def sync_progress_on_problem_change(sender, instance, created, **kwargs):
             # 批量更新所有用户的进度
             for progress in progresses:
                 progress.update_progress()
+            
+            # 重新计算该题单的所有徽章资格
+            badges = ProblemSetBadge.objects.filter(problemset=instance.problemset)
+            for badge in badges:
+                badge.recalculate_user_badges()
                 
-            logger.info(f"已同步题单 {instance.problemset.id} 的所有用户进度")
+            logger.info(f"已同步题单 {instance.problemset.id} 的所有用户进度和徽章资格")
             
     except Exception as e:
         logger.error(f"同步题单进度时出错: {e}")
@@ -48,8 +53,13 @@ def sync_progress_on_problem_delete(sender, instance, **kwargs):
             # 批量更新所有用户的进度
             for progress in progresses:
                 progress.update_progress()
+            
+            # 重新计算该题单的所有徽章资格
+            badges = ProblemSetBadge.objects.filter(problemset=instance.problemset)
+            for badge in badges:
+                badge.recalculate_user_badges()
                 
-            logger.info(f"已同步题单 {instance.problemset.id} 的所有用户进度（删除题目后）")
+            logger.info(f"已同步题单 {instance.problemset.id} 的所有用户进度和徽章资格（删除题目后）")
             
     except Exception as e:
         logger.error(f"同步题单进度时出错: {e}")
diff --git a/problemset/urls/oj.py b/problemset/urls/oj.py
index ec9449f..3fa8e4d 100644
--- a/problemset/urls/oj.py
+++ b/problemset/urls/oj.py
@@ -7,6 +7,7 @@ from problemset.views.oj import (
     UserBadgeAPI,
     UserProgressAPI,
     ProblemSetBadgeAPI,
+    ProblemSetUserProgressAPI,
 )
 
 urlpatterns = [
@@ -46,4 +47,9 @@ urlpatterns = [
         ProblemSetBadgeAPI.as_view(),
         name="problemset_badges_api",
     ),
+    path(
+        "problemset/<int:problem_set_id>/users_progress",
+        ProblemSetUserProgressAPI.as_view(),
+        name="problemset_user_progress_api",
+    ),
 ]
diff --git a/problemset/views/oj.py b/problemset/views/oj.py
index bf6ef5b..4ec6c85 100644
--- a/problemset/views/oj.py
+++ b/problemset/views/oj.py
@@ -183,7 +183,7 @@ class ProblemSetProgressAPI(APIView):
             problem_score = 0
 
         progress.progress_detail[problem_id] = {
-            "score": problem_score,
+            "score": problem_score,  # 题单中设置的分值
             "submit_time": data.get("submit_time", timezone.now().isoformat()),
         }
 
@@ -275,3 +275,29 @@ class ProblemSetBadgeAPI(APIView):
         badges = ProblemSetBadge.objects.filter(problemset=problem_set)
         serializer = ProblemSetBadgeSerializer(badges, many=True)
         return self.success(serializer.data)
+
+
+class ProblemSetUserProgressAPI(APIView):
+    """题单用户进度列表API"""
+
+    def get(self, request, problem_set_id: int):
+        """获取题单的用户进度列表"""
+        try:
+            problem_set = (
+                ProblemSet.objects.filter(id=problem_set_id, visible=True)
+                .exclude(status="draft")
+                .get()
+            )
+        except ProblemSet.DoesNotExist:
+            return self.error("题单不存在")
+
+        # 获取所有参与该题单的用户进度
+        progresses = ProblemSetProgress.objects.filter(problemset=problem_set).order_by(
+            "-is_completed", "-progress_percentage", "join_time"
+        )
+        
+        try:
+            serializer = ProblemSetProgressSerializer(progresses, many=True)
+            return self.success(serializer.data)
+        except Exception as e:
+            return self.error(f"序列化错误: {str(e)}")