diff --git a/internal/biz/greeter.go b/internal/biz/greeter.go
deleted file mode 100644
index 51aeaa68ad3dcc558e7810eabd1a6f7381017e1f..0000000000000000000000000000000000000000
--- a/internal/biz/greeter.go
+++ /dev/null
@@ -1,45 +0,0 @@
-package biz
-
-import (
-	"context"
-
-	v1 "github.com/go-kratos/kratos-layout/api/helloworld/v1"
-	"github.com/go-kratos/kratos/v2/errors"
-	"github.com/go-kratos/kratos/v2/log"
-)
-
-var (
-	// ErrUserNotFound is user not found.
-	ErrUserNotFound = errors.NotFound(v1.ErrorReason_USER_NOT_FOUND.String(), "user not found")
-)
-
-// Greeter is a Greeter model.
-type Greeter struct {
-	Hello string
-}
-
-// GreeterRepo is a Greater repo.
-type GreeterRepo interface {
-	Save(context.Context, *Greeter) (*Greeter, error)
-	Update(context.Context, *Greeter) (*Greeter, error)
-	FindByID(context.Context, int64) (*Greeter, error)
-	ListByHello(context.Context, string) ([]*Greeter, error)
-	ListAll(context.Context) ([]*Greeter, error)
-}
-
-// GreeterUsecase is a Greeter usecase.
-type GreeterUsecase struct {
-	repo GreeterRepo
-	log  *log.Helper
-}
-
-// NewGreeterUsecase new a Greeter usecase.
-func NewGreeterUsecase(repo GreeterRepo) *GreeterUsecase {
-	return &GreeterUsecase{repo: repo}
-}
-
-// CreateGreeter creates a Greeter, and returns the new Greeter.
-func (uc *GreeterUsecase) CreateGreeter(ctx context.Context, g *Greeter) (*Greeter, error) {
-	log.Infof("CreateGreeter: %v", g.Hello)
-	return uc.repo.Save(ctx, g)
-}
diff --git a/internal/data/greeter.go b/internal/data/greeter.go
deleted file mode 100644
index 7af3138e507fbc9d74b58a524d10c3a760d0e6b5..0000000000000000000000000000000000000000
--- a/internal/data/greeter.go
+++ /dev/null
@@ -1,38 +0,0 @@
-package data
-
-import (
-	"context"
-
-	"github.com/go-kratos/kratos-layout/internal/biz"
-)
-
-type greeterRepo struct {
-	data *Data
-}
-
-// NewGreeterRepo .
-func NewGreeterRepo(data *Data) biz.GreeterRepo {
-	return &greeterRepo{
-		data: data,
-	}
-}
-
-func (r *greeterRepo) Save(ctx context.Context, g *biz.Greeter) (*biz.Greeter, error) {
-	return g, nil
-}
-
-func (r *greeterRepo) Update(ctx context.Context, g *biz.Greeter) (*biz.Greeter, error) {
-	return g, nil
-}
-
-func (r *greeterRepo) FindByID(context.Context, int64) (*biz.Greeter, error) {
-	return nil, nil
-}
-
-func (r *greeterRepo) ListByHello(context.Context, string) ([]*biz.Greeter, error) {
-	return nil, nil
-}
-
-func (r *greeterRepo) ListAll(context.Context) ([]*biz.Greeter, error) {
-	return nil, nil
-}
diff --git a/internal/service/greeter.go b/internal/service/greeter.go
deleted file mode 100644
index a05ee671409ad7d43ef290c0f6350796b58fb422..0000000000000000000000000000000000000000
--- a/internal/service/greeter.go
+++ /dev/null
@@ -1,29 +0,0 @@
-package service
-
-import (
-	"context"
-
-	v1 "github.com/go-kratos/kratos-layout/api/helloworld/v1"
-	"github.com/go-kratos/kratos-layout/internal/biz"
-)
-
-// GreeterService is a greeter service.
-type GreeterService struct {
-	v1.UnimplementedGreeterServer
-
-	uc *biz.GreeterUsecase
-}
-
-// NewGreeterService new a greeter service.
-func NewGreeterService(uc *biz.GreeterUsecase) *GreeterService {
-	return &GreeterService{uc: uc}
-}
-
-// SayHello implements helloworld.GreeterServer.
-func (s *GreeterService) SayHello(ctx context.Context, in *v1.HelloRequest) (*v1.HelloReply, error) {
-	g, err := s.uc.CreateGreeter(ctx, &biz.Greeter{Hello: in.Name})
-	if err != nil {
-		return nil, err
-	}
-	return &v1.HelloReply{Message: "Hello " + g.Hello}, nil
-}