diff --git a/api1/statistics_api.py b/api1/statistics_api.py
new file mode 100644
index 0000000..17573ab
--- /dev/null
+++ b/api1/statistics_api.py
@@ -0,0 +1,18 @@
+# api/stats
+# 本文件定义统计分析相关的所有 API 路由（Controller 层）
+from itertools import count
+
+from fastapi import APIRouter, Depends, HTTPException, Query
+from sqlalchemy.orm import Session
+from typing import List
+
+from database import get_db
+from dao.users_dao import UserDAO
+from scheme.statistics_scheme import StatsResponse
+from scheme.users import UserCreate, UserUpdate, UserResponse
+
+router = APIRouter()
+# **多维度班级统计**：统计每个班级的总人数，以及按性别（男、女）细分的人数分布。
+@router.get("/class/stats/gender", response_model=List[StatsResponse])
+def get_class_stats(db: Session = Depends(get_db)):
+    sbg = db.query(StuInfo.cls_id, count(StuInfo.id)).group_by(StuInfo.cls_id, StuInfo.gender).all()
\ No newline at end of file
diff --git a/main.py b/main.py
index ca611b0..25daeed 100644
--- a/main.py
+++ b/main.py
@@ -5,7 +5,7 @@ from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 
 from database import engine, Base
-from api1 import users   # 导入 users 子路由
+from api1 import users, statistics_api   # 导入 users 子路由
 
 # 1. 创建数据库表（如果表不存在）
 #    Base.metadata.create_all 会扫描所有继承 Base 的模型，生成对应的 CREATE TABLE 语句
@@ -32,6 +32,8 @@ app.add_middleware(
 #    prefix 为路由前缀，所有用户接口都以 /api/users 开头
 app.include_router(users.router, prefix="/api/users", tags=["用户管理"])
 
+app.include_router(statistics_api.router, prefix="/api/stats", tags=["统计分析"])
+
 # 5. 根路径
 @app.get("/")
 async def root():
diff --git a/scheme/statistics_scheme.py b/scheme/statistics_scheme.py
new file mode 100644
index 0000000..79d950b
--- /dev/null
+++ b/scheme/statistics_scheme.py
@@ -0,0 +1,22 @@
+# scheme/statistics_scheme.py
+from pydantic import BaseModel, Field, EmailStr
+from datetime import datetime
+from typing import Optional
+
+# ---------- 请求模型 ----------
+# class UserCreate(BaseModel):
+#     username: str = Field(..., min_length=3, max_length=50)
+#     email: EmailStr
+#     full_name: Optional[str] = Field(None, max_length=100)
+#
+# class UserUpdate(BaseModel):
+#     username: Optional[str] = Field(None, min_length=3, max_length=50)
+#     email: Optional[EmailStr] = None
+#     full_name: Optional[str] = Field(None, max_length=100)
+
+# ---------- 响应模型 ----------
+# 多维度班级统计
+class StatsResponse(BaseModel):
+    total_count: int
+    man_count: int
+    female_count: int
\ No newline at end of file