diff --git a/biz/controller/child.go b/biz/controller/child.go
new file mode 100644
index 0000000..600fb44
--- /dev/null
+++ b/biz/controller/child.go
@@ -0,0 +1,68 @@
+package controller
+
+import (
+	"context"
+
+	"github.com/gogf/gf/v2/frame/g"
+
+	"36wisdom/biz/model/dto"
+	"36wisdom/biz/service"
+	"36wisdom/common/auth"
+)
+
+type child struct{}
+
+var Child = &child{}
+
+func (c *child) Create(ctx context.Context, req *dto.ChildCreateReq) (*dto.ChildCreateRes, error) {
+	childId, err := service.Child.Create(ctx, auth.GetUid(ctx), req.Nickname, req.AgeGroup)
+	if err != nil {
+		return nil, err
+	}
+	return &dto.ChildCreateRes{ChildId: childId}, nil
+}
+
+func (c *child) Update(ctx context.Context, req *dto.ChildUpdateReq) (*dto.ChildUpdateRes, error) {
+	data := g.Map{}
+	if req.Nickname != "" {
+		data["nickname"] = req.Nickname
+	}
+	if req.Avatar != "" {
+		data["avatar"] = req.Avatar
+	}
+	if req.AgeGroup != "" {
+		data["age_group"] = req.AgeGroup
+	}
+	if req.DailyLimitMinutes > 0 {
+		data["daily_limit_minutes"] = req.DailyLimitMinutes
+	}
+	if len(data) == 0 {
+		return &dto.ChildUpdateRes{}, nil
+	}
+	if err := service.Child.Update(ctx, auth.GetUid(ctx), req.ChildId, data); err != nil {
+		return nil, err
+	}
+	return &dto.ChildUpdateRes{}, nil
+}
+
+func (c *child) List(ctx context.Context, req *dto.ChildListReq) (*dto.ChildListRes, error) {
+	items, err := service.Child.List(ctx, auth.GetUid(ctx))
+	if err != nil {
+		return nil, err
+	}
+	res := &dto.ChildListRes{List: make([]dto.ChildListItem, 0, len(items))}
+	for _, it := range items {
+		res.List = append(res.List, dto.ChildListItem{
+			ChildId:           it.ChildId,
+			Nickname:          it.Nickname,
+			Avatar:            it.Avatar,
+			AgeGroup:          it.AgeGroup,
+			Points:            it.Points,
+			Level:             it.Level,
+			LevelTitle:        it.LevelTitle,
+			PerfectCount:      it.PerfectCount,
+			DailyLimitMinutes: it.DailyLimitMinutes,
+		})
+	}
+	return res, nil
+}
diff --git a/biz/controller/parent.go b/biz/controller/parent.go
new file mode 100644
index 0000000..cbd3821
--- /dev/null
+++ b/biz/controller/parent.go
@@ -0,0 +1,28 @@
+package controller
+
+import (
+	"context"
+
+	"36wisdom/biz/model/dto"
+	"36wisdom/biz/service"
+)
+
+type parent struct{}
+
+var Parent = &parent{}
+
+func (c *parent) Register(ctx context.Context, req *dto.RegisterReq) (*dto.RegisterRes, error) {
+	parentId, token, err := service.Parent.Register(ctx, req.Phone, req.Password, req.Nickname)
+	if err != nil {
+		return nil, err
+	}
+	return &dto.RegisterRes{Token: token, ParentId: parentId}, nil
+}
+
+func (c *parent) Login(ctx context.Context, req *dto.LoginReq) (*dto.LoginRes, error) {
+	parentId, token, err := service.Parent.Login(ctx, req.Phone, req.Password)
+	if err != nil {
+		return nil, err
+	}
+	return &dto.LoginRes{Token: token, ParentId: parentId}, nil
+}
diff --git a/biz/controller/router.go b/biz/controller/router.go
index c424337..c910b01 100644
--- a/biz/controller/router.go
+++ b/biz/controller/router.go
@@ -10,14 +10,21 @@ import (
 
 // Register 注册全部路由分组；各业务控制器在对应任务中挂载。
 func Register(s *ghttp.Server) {
+	s.Use(ghttp.MiddlewareHandlerResponse)
+
 	s.BindHandler("GET:/ping", func(r *ghttp.Request) {
 		r.Response.Write("pong")
 	})
 
 	secret := g.Cfg().MustGet(gctx.New(), "auth.secret").String()
 
-	// 前台：家长鉴权组（公开注册/登录接口除外），业务控制器按模块挂载
+	// 前台：公开接口（注册/登录），鉴权接口按模块挂载
 	s.Group("/api", func(g *ghttp.RouterGroup) {
-		g.Middleware(auth.Middleware(secret, ""))
+		g.Bind(Parent)
+
+		g.Group("/", func(g *ghttp.RouterGroup) {
+			g.Middleware(auth.Middleware(secret, ""))
+			g.Bind(Child)
+		})
 	})
 }
diff --git a/biz/model/dto/child.go b/biz/model/dto/child.go
new file mode 100644
index 0000000..824d3d1
--- /dev/null
+++ b/biz/model/dto/child.go
@@ -0,0 +1,44 @@
+package dto
+
+import "github.com/gogf/gf/v2/frame/g"
+
+type ChildCreateReq struct {
+	g.Meta   `path:"/parent/child/create" method:"post" summary:"创建孩子档案"`
+	Nickname string `v:"required|length:1,32" json:"nickname"`
+	AgeGroup string `v:"required|in:4-6,6-8" json:"age_group"`
+}
+
+type ChildCreateRes struct {
+	ChildId int64 `json:"child_id"`
+}
+
+type ChildUpdateReq struct {
+	g.Meta            `path:"/parent/child/update" method:"post" summary:"更新孩子资料"`
+	ChildId           int64  `v:"required" json:"child_id"`
+	Nickname          string `v:"length:1,32" json:"nickname"`
+	Avatar            string `v:"max-length:255" json:"avatar"`
+	AgeGroup          string `v:"in:4-6,6-8" json:"age_group"`
+	DailyLimitMinutes int    `v:"min:0|max:600" json:"daily_limit_minutes"`
+}
+
+type ChildUpdateRes struct{}
+
+type ChildListReq struct {
+	g.Meta `path:"/parent/child/list" method:"get" summary:"孩子档案列表"`
+}
+
+type ChildListItem struct {
+	ChildId           int64  `json:"child_id"`
+	Nickname          string `json:"nickname"`
+	Avatar            string `json:"avatar"`
+	AgeGroup          string `json:"age_group"`
+	Points            int    `json:"points"`
+	Level             int    `json:"level"`
+	LevelTitle        string `json:"level_title"`
+	PerfectCount      int    `json:"perfect_count"`
+	DailyLimitMinutes int    `json:"daily_limit_minutes"`
+}
+
+type ChildListRes struct {
+	List []ChildListItem `json:"list"`
+}
diff --git a/biz/model/dto/parent.go b/biz/model/dto/parent.go
new file mode 100644
index 0000000..4c2cd79
--- /dev/null
+++ b/biz/model/dto/parent.go
@@ -0,0 +1,26 @@
+package dto
+
+import "github.com/gogf/gf/v2/frame/g"
+
+type RegisterReq struct {
+	g.Meta   `path:"/parent/register" method:"post" summary:"家长注册"`
+	Phone    string `v:"required|length:11,11|regex:^1[3-9][0-9]{9}$" json:"phone"`
+	Password string `v:"required|length:6,32" json:"password"`
+	Nickname string `v:"required|length:1,32" json:"nickname"`
+}
+
+type RegisterRes struct {
+	Token    string `json:"token"`
+	ParentId int64  `json:"parent_id"`
+}
+
+type LoginReq struct {
+	g.Meta   `path:"/parent/login" method:"post" summary:"家长登录"`
+	Phone    string `v:"required|length:11,11|regex:^1[3-9][0-9]{9}$" json:"phone"`
+	Password string `v:"required|length:6,32" json:"password"`
+}
+
+type LoginRes struct {
+	Token    string `json:"token"`
+	ParentId int64  `json:"parent_id"`
+}
diff --git a/biz/service/child.go b/biz/service/child.go
new file mode 100644
index 0000000..5763cd6
--- /dev/null
+++ b/biz/service/child.go
@@ -0,0 +1,98 @@
+package service
+
+import (
+	"context"
+
+	"github.com/gogf/gf/v2/errors/gerror"
+	"github.com/gogf/gf/v2/frame/g"
+
+	"36wisdom/biz/consts"
+	"36wisdom/biz/dao"
+)
+
+type child struct{}
+
+var Child = &child{}
+
+// ChildItem 孩子列表项（含派生值：完美关卡数）。
+type ChildItem struct {
+	ChildId           int64
+	Nickname          string
+	Avatar            string
+	AgeGroup          string
+	Points            int
+	Level             int
+	LevelTitle        string
+	PerfectCount      int
+	DailyLimitMinutes int
+}
+
+// Create 新建孩子档案。
+func (s *child) Create(ctx context.Context, parentId int64, nickname, ageGroup string) (int64, error) {
+	return dao.Child.InsertAndReturnId(ctx, g.Map{
+		"parent_id": parentId,
+		"nickname":  nickname,
+		"age_group": ageGroup,
+		"status":    consts.StatusEnabled,
+	})
+}
+
+// Update 更新孩子档案：仅本人名下档案可改。
+func (s *child) Update(ctx context.Context, parentId, childId int64, data g.Map) error {
+	rec, err := dao.Child.Model().Ctx(ctx).WherePri(childId).One()
+	if err != nil {
+		return err
+	}
+	if rec.IsEmpty() || rec["parent_id"].Int64() != parentId {
+		return gerror.New("孩子档案不存在")
+	}
+	return dao.Child.UpdateByPk(ctx, childId, data)
+}
+
+// List 家长名下的孩子列表，perfect 数经 user_progress 批量汇总。
+func (s *child) List(ctx context.Context, parentId int64) ([]*ChildItem, error) {
+	recs, err := dao.Child.Model().Ctx(ctx).Where("parent_id", parentId).Order("id ASC").All()
+	if err != nil {
+		return nil, err
+	}
+
+	items := make([]*ChildItem, 0, len(recs))
+	if len(recs) == 0 {
+		return items, nil
+	}
+
+	childIds := make([]int64, 0, len(recs))
+	for _, r := range recs {
+		childIds = append(childIds, r["id"].Int64())
+	}
+
+	perfectMap := make(map[int64]int, len(recs))
+	rows, err := dao.UserProgress.Model().Ctx(ctx).
+		Fields("child_id", "COUNT(*) AS cnt").
+		Where("perfect", 1).
+		WhereIn("child_id", childIds).
+		Group("child_id").All()
+	if err != nil {
+		return nil, err
+	}
+	for _, r := range rows {
+		perfectMap[r["child_id"].Int64()] = r["cnt"].Int()
+	}
+
+	for _, r := range recs {
+		perfect := perfectMap[r["id"].Int64()]
+		level, title := LevelOf(perfect)
+		items = append(items, &ChildItem{
+			ChildId:           r["id"].Int64(),
+			Nickname:          r["nickname"].String(),
+			Avatar:            r["avatar"].String(),
+			AgeGroup:          r["age_group"].String(),
+			Points:            r["points"].Int(),
+			Level:             level,
+			LevelTitle:        title,
+			PerfectCount:      perfect,
+			DailyLimitMinutes: r["daily_limit_minutes"].Int(),
+		})
+	}
+	return items, nil
+}
diff --git a/biz/service/level.go b/biz/service/level.go
new file mode 100644
index 0000000..7e1df0a
--- /dev/null
+++ b/biz/service/level.go
@@ -0,0 +1,26 @@
+package service
+
+// 成长等级：按完美关卡数映射称号（技术设计.md 4.10，派生值不落库）。
+var levelTitles = []struct {
+	MinPerfect int
+	Title      string
+}{
+	{MinPerfect: 0, Title: "小学徒"},
+	{MinPerfect: 5, Title: "小书童"},
+	{MinPerfect: 10, Title: "小军师"},
+	{MinPerfect: 20, Title: "军师"},
+	{MinPerfect: 30, Title: "大将军"},
+}
+
+// LevelOf 按完美关卡数返回等级（1-5）与称号。
+func LevelOf(perfectCount int) (level int, title string) {
+	level = 1
+	title = levelTitles[0].Title
+	for i, lt := range levelTitles {
+		if perfectCount >= lt.MinPerfect {
+			level = i + 1
+			title = lt.Title
+		}
+	}
+	return
+}
diff --git a/biz/service/parent.go b/biz/service/parent.go
new file mode 100644
index 0000000..a03604e
--- /dev/null
+++ b/biz/service/parent.go
@@ -0,0 +1,60 @@
+package service
+
+import (
+	"context"
+
+	"github.com/gogf/gf/v2/errors/gerror"
+	"github.com/gogf/gf/v2/frame/g"
+	"golang.org/x/crypto/bcrypt"
+
+	"36wisdom/biz/consts"
+	"36wisdom/biz/dao"
+)
+
+type parent struct{}
+
+var Parent = &parent{}
+
+// Register 家长注册：手机号唯一、bcrypt 落库、签发 token。
+func (s *parent) Register(ctx context.Context, phone, password, nickname string) (parentId int64, token string, err error) {
+	rec, err := dao.Parent.Model().Ctx(ctx).Where("phone", phone).One()
+	if err != nil {
+		return 0, "", err
+	}
+	if !rec.IsEmpty() {
+		return 0, "", gerror.Newf("手机号 %s 已注册", phone)
+	}
+
+	hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+	if err != nil {
+		return 0, "", err
+	}
+	parentId, err = dao.Parent.InsertAndReturnId(ctx, g.Map{
+		"phone":    phone,
+		"password": string(hash),
+		"nickname": nickname,
+		"status":   consts.StatusEnabled,
+	})
+	if err != nil {
+		return 0, "", err
+	}
+	token, err = Auth.GenerateToken(ctx, parentId, consts.RoleParent)
+	return parentId, token, err
+}
+
+// Login 家长登录：校验手机号与密码，签发 token。
+func (s *parent) Login(ctx context.Context, phone, password string) (parentId int64, token string, err error) {
+	rec, err := dao.Parent.Model().Ctx(ctx).Where("phone", phone).One()
+	if err != nil {
+		return 0, "", err
+	}
+	if rec.IsEmpty() {
+		return 0, "", gerror.New("手机号或密码错误")
+	}
+	if err = bcrypt.CompareHashAndPassword([]byte(rec["password"].String()), []byte(password)); err != nil {
+		return 0, "", gerror.New("手机号或密码错误")
+	}
+	parentId = rec["id"].Int64()
+	token, err = Auth.GenerateToken(ctx, parentId, consts.RoleParent)
+	return parentId, token, err
+}
diff --git a/common/base_dao.go b/common/base_dao.go
index 61f8654..5cf33f3 100644
--- a/common/base_dao.go
+++ b/common/base_dao.go
@@ -14,7 +14,7 @@ type BaseDao struct {
 
 func (d *BaseDao) Model() *gdb.Model { return g.DB().Model(d.Table) }
 
-func (d *BaseDao) InsertAndReturnId(ctx context.Context, data gdb.Record) (int64, error) {
+func (d *BaseDao) InsertAndReturnId(ctx context.Context, data g.Map) (int64, error) {
 	res, err := d.Model().Ctx(ctx).Data(data).Insert()
 	if err != nil {
 		return 0, err
@@ -26,7 +26,7 @@ func (d *BaseDao) GetOneByPk(ctx context.Context, pk int64) (gdb.Record, error)
 	return d.Model().Ctx(ctx).WherePri(pk).One()
 }
 
-func (d *BaseDao) UpdateByPk(ctx context.Context, pk int64, data gdb.Record) error {
+func (d *BaseDao) UpdateByPk(ctx context.Context, pk int64, data g.Map) error {
 	_, err := d.Model().Ctx(ctx).WherePri(pk).Data(data).Update()
 	return err
 }