diff --git a/.idea/httpRequests/2019-11-05T074354.200.json b/.idea/httpRequests/2019-11-05T074354.200.json
new file mode 100644
index 0000000..8fe2cc3
--- /dev/null
+++ b/.idea/httpRequests/2019-11-05T074354.200.json
@@ -0,0 +1,5 @@
+{
+  "code": 40001,
+  "msg": "UserName required",
+  "error": "Key: 'UserLoginService.UserName' Error:Field validation for 'UserName' failed on the 'required' tag\nKey: 'UserLoginService.Password' Error:Field validation for 'Password' failed on the 'required' tag"
+}
\ No newline at end of file
diff --git a/.idea/httpRequests/http-requests-log.http b/.idea/httpRequests/http-requests-log.http
new file mode 100644
index 0000000..2568f76
--- /dev/null
+++ b/.idea/httpRequests/http-requests-log.http
@@ -0,0 +1,18 @@
+POST http://127.0.0.1:5000/Api/V3/User/Login
+Accept: */*
+Cache-Control: no-cache
+
+{}
+
+<> 2019-11-05T074354.200.json
+
+###
+
+POST http://127.0.0.1:5000/Api/V3/User/Login
+Accept: */*
+Cache-Control: no-cache
+
+<> 2019-11-05T074329.200.json
+
+###
+
diff --git a/go.mod b/go.mod
index ba40eaf..993e688 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,7 @@ module Cloudreve
 
 go 1.12
 
-require github.com/gin-gonic/gin v1.4.0
+require (
+	github.com/gin-gonic/gin v1.4.0
+	gopkg.in/go-playground/validator.v8 v8.18.2
+)
diff --git a/routers/controllers/main.go b/routers/controllers/main.go
new file mode 100644
index 0000000..7e5a276
--- /dev/null
+++ b/routers/controllers/main.go
@@ -0,0 +1,25 @@
+package controllers
+
+import (
+	"Cloudreve/serializer"
+	"encoding/json"
+	"fmt"
+	"gopkg.in/go-playground/validator.v8"
+)
+
+// ErrorResponse 返回错误消息
+func ErrorResponse(err error) serializer.Response {
+	if ve, ok := err.(validator.ValidationErrors); ok {
+		for _, e := range ve {
+			return serializer.ParamErr(
+				fmt.Sprintf("%s %s", e.Field, e.Tag),
+				err,
+			)
+		}
+	}
+	if _, ok := err.(*json.UnmarshalTypeError); ok {
+		return serializer.ParamErr("JSON类型不匹配", err)
+	}
+
+	return serializer.ParamErr("参数错误", err)
+}
diff --git a/routers/controllers/user.go b/routers/controllers/user.go
new file mode 100644
index 0000000..bb61c49
--- /dev/null
+++ b/routers/controllers/user.go
@@ -0,0 +1,22 @@
+package controllers
+
+import (
+	"Cloudreve/serializer"
+	"Cloudreve/service/user"
+	"github.com/gin-gonic/gin"
+)
+
+// UserLogin 用户登录
+func UserLogin(c *gin.Context) {
+	var service service.UserLoginService
+	if err := c.ShouldBindJSON(&service); err == nil {
+		//res := service.Login(c)
+		c.JSON(200, serializer.Response{
+			Code: 0,
+			Msg:  "OK",
+		})
+	} else {
+		c.JSON(200, ErrorResponse(err))
+	}
+
+}
diff --git a/routers/router.go b/routers/router.go
index fec749e..a8332b6 100644
--- a/routers/router.go
+++ b/routers/router.go
@@ -8,10 +8,13 @@ import (
 func InitRouter() *gin.Engine {
 	r := gin.Default()
 
-	// 路由
+	// 顶层路由分组
 	v3 := r.Group("/Api/V3")
 	{
+		// 测试用路由
 		v3.GET("Ping", controllers.Ping)
+		// 用户登录
+		v3.POST("User/Login", controllers.UserLogin)
 
 	}
 	return r
diff --git a/serializer/common.go b/serializer/common.go
index b4931ec..6656100 100644
--- a/serializer/common.go
+++ b/serializer/common.go
@@ -1,5 +1,7 @@
 package serializer
 
+import "github.com/gin-gonic/gin"
+
 // Response 基础序列化器
 type Response struct {
 	Code  int         `json:"code"`
@@ -7,3 +9,49 @@ type Response struct {
 	Msg   string      `json:"msg"`
 	Error string      `json:"error,omitempty"`
 }
+
+// 三位数错误编码为复用http原本含义
+// 五位数错误编码为应用自定义错误
+// 五开头的五位数错误编码为服务器端错误，比如数据库操作失败
+// 四开头的五位数错误编码为客户端错误，有时候是客户端代码写错了，有时候是用户操作错误
+const (
+	// CodeCheckLogin 未登录
+	CodeCheckLogin = 401
+	// CodeNoRightErr 未授权访问
+	CodeNoRightErr = 403
+	// CodeDBError 数据库操作失败
+	CodeDBError = 50001
+	// CodeEncryptError 加密失败
+	CodeEncryptError = 50002
+	//CodeParamErr 各种奇奇怪怪的参数错误
+	CodeParamErr = 40001
+)
+
+// DBErr 数据库操作失败
+func DBErr(msg string, err error) Response {
+	if msg == "" {
+		msg = "数据库操作失败"
+	}
+	return Err(CodeDBError, msg, err)
+}
+
+// ParamErr 各种参数错误
+func ParamErr(msg string, err error) Response {
+	if msg == "" {
+		msg = "参数错误"
+	}
+	return Err(CodeParamErr, msg, err)
+}
+
+// Err 通用错误处理
+func Err(errCode int, msg string, err error) Response {
+	res := Response{
+		Code: errCode,
+		Msg:  msg,
+	}
+	// 生产环境隐藏底层报错
+	if err != nil && gin.Mode() != gin.ReleaseMode {
+		res.Error = err.Error()
+	}
+	return res
+}
diff --git a/service/user/user_login.go b/service/user/user_login.go
new file mode 100644
index 0000000..4e74324
--- /dev/null
+++ b/service/user/user_login.go
@@ -0,0 +1,7 @@
+package service
+
+// UserLoginService 管理用户登录的服务
+type UserLoginService struct {
+	UserName string `form:"user_name" json:"user_name" binding:"required,min=5,max=30"`
+	Password string `form:"password" json:"password" binding:"required,min=8,max=40"`
+}