diff --git a/PythonProject/api/student_api.py b/PythonProject/api/student_api.py
index b71aafc..db947bf 100644
--- a/PythonProject/api/student_api.py
+++ b/PythonProject/api/student_api.py
@@ -1,11 +1,44 @@
-from fastapi import APIRouter
-from dao.student_dao import select_age
+from fastapi import APIRouter,Depends,HTTPException
 from schema.student_schema import StudentResponse
+from dao.student_dao import delete_student_dao,add_student_dao,update_student_dao,get_student_dao,select_age
+from schema.student_schema import StudentRequest,StudentResponse
+from model.student_model import Student_Model
+from util.database import get_db
 
-studentapi = APIRouter()
 
-@studentapi.get("/age",response_model=StudentResponse,tags=['统计分析模块'],description='根据年龄查询学生信息')
+StudentAPI = APIRouter()
+
+@StudentAPI.get("/age",response_model=StudentResponse,tags=['统计分析模块'],description='根据年龄查询学生信息')
 def get_students(min_age:int|None=None,max_age:int|None=None):
     l = select_age(min_age,max_age)
     return [i for i in l]
 
+@StudentAPI.get('',description='查询学生信息')
+def get_students(stu_id:int|None=None
+                    ,stu_name:str|None=None
+                    ,class_id:int|None=None
+                    ,db=Depends(get_db)
+                    ,page:int=1
+                    ,page_size:int=10):
+    r=get_student_dao(stu_id,stu_name,class_id,db,page,page_size)
+    if r:
+        return r
+    raise HTTPException(status_code=404,detail='学生不存在')
+
+@StudentAPI.put('/{stu_id}')
+def update_orders(s:StudentRequest,stu_id:int,db=Depends(get_db)):
+    d = s.model_dump(exclude_unset=True)
+    r = update_student_dao( stu_id=stu_id,update_data=d,db=db )
+    if not r:
+        raise HTTPException(status_code=500, detail='没有更新！')
+    return {'code':200,'totals':r,'detail':'更新成功'}
+
+@StudentAPI.delete('/{stu_id}')
+def del_student(stu_id:int,db=Depends(get_db)):
+    rows=delete_student_dao( stu_id=stu_id,db=db )
+    if not rows:
+        raise HTTPException(status_code=500,detail='没有删除')
+    return {'code':200,'totals':rows,'detail':'删除成功'}
+
+
+
diff --git a/PythonProject/dao/student_dao.py b/PythonProject/dao/student_dao.py
index 55d7dd5..9806925 100644
--- a/PythonProject/dao/student_dao.py
+++ b/PythonProject/dao/student_dao.py
@@ -9,29 +9,44 @@ def select_age(min_age,max_age,session=Depends(get_db)):
             raise HTTPException(status_code=400, detail="请至少传入一个参数")
         session = session.query(Student_Model)
         if min_age is not None:
-            session = session.filter(Student_Model.age >= min_age)
+            session = session.filter(Student_Model.age >= min_age,Student_Model.delete_status == 0)
         if max_age is not None:
-            session = session.filter(Student_Model.age <= max_age)
+            session = session.filter(Student_Model.age <= max_age,Student_Model.delete_status == 0)
         return session.all()
     except HTTPException:
         raise
     except Exception:
         raise HTTPException(status_code=500,detail="查询异常")
 
-def delete_student_dao(stu_id,db):
+def add_student_dao(o,db=Depends(get_db)):
     try:
-        rows = db.query(Student_Model).filter(Student_Model.stu_id == stu_id).delete()
+        r = db.query(Student_Model).filter(Student_Model.stu_id == o['stu_id'],Student_Model.delete_status == 0).all()
+        if not r:
+            o1 = Student_Model( **o)
+            db.add(o1)
+        else:
+            raise ValueError
+    except:
+        db.rollback()
+        return False
+    else:
+        db.commit()
+        return True
+
+def delete_student_dao(stu_id,db=Depends(get_db)):
+    try:
+        rows = db.query(Student_Model).filter(Student_Model.stu_id == stu_id,Student_Model.delete_status == 0).delete()
+        Student_Model.delete_status = 1
+        db.commit()
     except:
         db.rollback()
         rows = 0
-    else:
-        db.commit()
     finally:
         return rows
 
-def update_student_dao(stu_id,update_data,db):
+def update_student_dao(stu_id,update_data,db=Depends(get_db)):
     try:
-        rows = db.query( Student_Model ).filter( Student_Model.stu_id == stu_id ).update( update_data )
+        rows = db.query( Student_Model ).filter( Student_Model.stu_id == stu_id,Student_Model.delete_status == 0).update( update_data )
     except:
         db.rollback()
         return False
@@ -42,17 +57,17 @@ def update_student_dao(stu_id,update_data,db):
 def get_student_dao(stu_id:Optional[int]
                    ,stu_name:Optional[str]
                    ,class_id:Optional[int]
-                   ,db: Session
                    ,page: int
                    ,page_size: int
+                   ,db=Depends(get_db)
                    ) -> tuple[List[Dict[str, Any]], int]:
     q = db.query(Student_Model)
     if stu_id:
-        q = q.filter(Student_Model.stu_id == stu_id)
+        q = q.filter(Student_Model.stu_id == stu_id,Student_Model.delete_status == 0)
     if stu_name:
-        q = q.filter(Student_Model.stu_name.like(f"%{stu_name}%"))
+        q = q.filter(Student_Model.stu_name.like(f"%{stu_name}%"),Student_Model.delete_status == 0)
     if class_id:
-        q= q.filter(Student_Model.class_id == class_id)
+        q= q.filter(Student_Model.class_id == class_id,Student_Model.delete_status == 0)
     total = q.count()
     r = q.offset((page - 1) * page_size).limit(page_size).all()
     data = []
diff --git a/需求文档.md b/需求文档.md
index 7b3b79e..c8bef6f 100644
--- a/需求文档.md
+++ b/需求文档.md
@@ -23,10 +23,10 @@ dao层（每一个功能就是一个函数，判断能否功能复用）
 通用模块
 
 学生模块
-实现增加学生的功能 **xxx 做成中**
-实现查询学生的功能：需要能进行多条件查询 **xxx 做成中**
-实现更新学生信息的功能 **xxx 做成中**
-实现删除学生信息的功能 （更新删除状态这个列，即软删除）**xxx 做成中**
+实现增加学生的功能 **msj 做成中**
+实现查询学生的功能：需要能进行多条件查询 **msj 做成中**
+实现更新学生信息的功能 **msj 做成中**
+实现删除学生信息的功能 （更新删除状态这个列，即软删除）**msj 做成中**
 
 成绩模块
 实现增加学生成绩的功能 **hzl 做成中**