diff --git a/api/score.py b/api/score.py
index 7302b5e..31d1ed8 100644
--- a/api/score.py
+++ b/api/score.py
@@ -1,7 +1,7 @@
 from fastapi import APIRouter, Depends, HTTPException, Query
 from sqlalchemy.orm import Session
 from core.database import get_db
-from dao.score import post_score_dao, update_score_dao, get_score_dao, get_all_scores_dao,delete_score_dao, exist_student_exam_dao
+from dao.score import post_score_dao, update_score_dao, get_score_dao,delete_score_dao, exist_student_exam_dao
 from schemas.score import ScoreCreate, ScoreUpdate, ScorePageResp
 
 scores_router = APIRouter(prefix="/scores", tags=["成绩接口"])
@@ -32,14 +32,6 @@ def list_score(
 
 
 
-@scores_router.get("/all", response_model=ScorePageResp,
-                   summary="所有学生成绩接口",
-                  )
-def list_all_scores(page: int = Query(1, ge=1),
-                    page_size: int = Query(10, ge=1, le=100),
-                    db: Session = Depends(get_db)):
-    total, data_list = get_all_scores_dao(page, page_size, db)
-    return {"total": total, "data": data_list}
 
 @scores_router.put("{score_id}", summary="更新成绩接口")
 def modify_score(score_id: int, req: ScoreUpdate, db: Session = Depends(get_db)):
diff --git a/dao/score.py b/dao/score.py
index eecfa60..5fb2138 100644
--- a/dao/score.py
+++ b/dao/score.py
@@ -34,14 +34,25 @@ def update_score_dao(score_id, db, updates):
 
 
 def get_score_dao(score_id, student_id, exam_seq, page, page_size, db):
-    """分页查询成绩，多条件过滤，只查未删除"""
+    """分页查询成绩，多条件过滤，只查未删除
+    规则：
+      - score_id == 0                → 查所有学生成绩（仅分页，不加 id 过滤）
+      - 三个筛选条件全为空（None）   → 直接返回空，不查库
+      - 其他情况                     → 按传入条件过滤
+    """
     q = db.query(Score).filter(Score.is_deleted == 0)
-    if score_id:
-        q = q.filter(Score.id == score_id)
-    if student_id:
-        q = q.filter(Score.student_id == student_id)
-    if exam_seq:
-        q = q.filter(Score.exam_seq == exam_seq)
+
+    if score_id == 0:
+        pass                                  # score_id=0 → 查全部（分页）
+    elif score_id is None and not student_id and not exam_seq:
+        return 0, []                          # 三个参数都没传 → 返回空
+    else:
+        if score_id:
+            q = q.filter(Score.id == score_id)
+        if student_id:
+            q = q.filter(Score.student_id == student_id)
+        if exam_seq:
+            q = q.filter(Score.exam_seq == exam_seq)
 
     total = q.count()
     rows = q.offset((page - 1) * page_size).limit(page_size).all()
@@ -62,36 +73,20 @@ def get_score_dao(score_id, student_id, exam_seq, page, page_size, db):
     ]
     return total, res_list
 
-def get_all_scores_dao(page, page_size, db):
-    r = db.query(Score).filter(Score.is_deleted == 0)\
-           .order_by(Score.student_id, Score.exam_seq)
-    total = r.count()                                    # 总条数
-    rows = r.offset((page-1)*page_size).limit(page_size).all()# 分页
-    res_list_all = [
-        {
-            "id": i.id,
-            "student_id": i.student_id,
-            "score": i.score,
-            "exam_seq": i.exam_seq,
-            "exam_date": i.exam_date,
-            "remark": i.remark,
-            "created_at": i.created_at,
-            "updated_at": i.updated_at,
-            "is_deleted": i.is_deleted
-        }
-        for i in rows
-    ]
-    return total,res_list_all
+
+
 
 
 
 def delete_score_dao(score_id, db):
-    """逻辑删除，更新is_deleted=1"""
     try:
-        db.query(Score).filter(
+        cnt = db.query(Score).filter(
             Score.id == score_id,
             Score.is_deleted == 0
-        ).update({"is_deleted": 1})
+        ).update({"is_deleted": 1})     # ← 接住返回值
+        if cnt == 0:                    # ← 关键：一行都没匹配到
+            db.rollback()
+            return False
     except Exception as err:
         print("删除成绩异常：", err)
         db.rollback()