diff --git a/go.mod b/go.mod
index 191b158..4205881 100644
--- a/go.mod
+++ b/go.mod
@@ -6,6 +6,7 @@ require (
 	github.com/gin-gonic/gin v1.9.1
 	github.com/google/uuid v1.1.2
 	github.com/gosuri/uitable v0.0.4
+	github.com/jinzhu/copier v0.4.0
 	github.com/spf13/cobra v1.7.0
 	github.com/spf13/pflag v1.0.5
 	github.com/spf13/viper v1.16.0
diff --git a/go.sum b/go.sum
index 425f205..3e8773d 100644
--- a/go.sum
+++ b/go.sum
@@ -161,6 +161,8 @@ github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:
 github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
+github.com/jinzhu/copier v0.4.0 h1:w3ciUoD19shMCRargcpm0cm91ytaBhDvuRpz1ODO/U8=
+github.com/jinzhu/copier v0.4.0/go.mod h1:DfbEm0FYsaqBcKcFuvmOZb218JkPGtvSHsKg8S8hyyg=
 github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD/E=
 github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
 github.com/jinzhu/now v1.1.5 h1:/o9tlHleP7gOFmsnYNz3RGnqzefHA47wQpKrrdTIwXQ=
diff --git a/internal/dazBlog/biz/biz.go b/internal/dazBlog/biz/biz.go
new file mode 100644
index 0000000..fd3d527
--- /dev/null
+++ b/internal/dazBlog/biz/biz.go
@@ -0,0 +1,35 @@
+// Copyright 2023 daz-3ux(杨鹏达) <daz-3ux@proton.me>. All rights reserved.
+// Use of this source code is governed by a MIT style
+// license that can be found in the LICENSE file. The original repo for
+// this file is https://github.com/Daz-3ux/dBlog.
+
+package biz
+
+import (
+	"github.com/Daz-3ux/dBlog/internal/dazBlog/biz/user"
+	"github.com/Daz-3ux/dBlog/internal/dazBlog/store"
+)
+
+// IBiz defines the method need to be implemented by the Biz layer
+type IBiz interface {
+	Users() user.UserBiz
+}
+
+// ensure that biz implements the IBiz interface
+var _ IBiz = (*biz)(nil)
+
+// biz implements the IBiz interface
+// biz layer is connected to the store layer in the under
+type biz struct {
+	ds store.IStore
+}
+
+// NewBiz create an instance of type IBiz
+func NewBiz(ds store.IStore) IBiz {
+	return &biz{ds: ds}
+}
+
+// Users return an instance of UserBiz
+func (b *biz) Users() user.UserBiz {
+	return user.NewUserBiz(b.ds)
+}
diff --git a/internal/dazBlog/biz/doc.go b/internal/dazBlog/biz/doc.go
new file mode 100644
index 0000000..898437f
--- /dev/null
+++ b/internal/dazBlog/biz/doc.go
@@ -0,0 +1,8 @@
+// Copyright 2023 daz-3ux(杨鹏达) <daz-3ux@proton.me>. All rights reserved.
+// Use of this source code is governed by a MIT style
+// license that can be found in the LICENSE file. The original repo for
+// this file is https://github.com/Daz-3ux/dBlog.
+
+// Package biz defines the business logic of the application
+// business logic layer
+package biz // import "github.com/Daz-3ux/dBlog/internal/dazBlog/biz"
diff --git a/internal/dazBlog/biz/user/user.go b/internal/dazBlog/biz/user/user.go
new file mode 100644
index 0000000..e09818c
--- /dev/null
+++ b/internal/dazBlog/biz/user/user.go
@@ -0,0 +1,52 @@
+// Copyright 2023 daz-3ux(杨鹏达) <daz-3ux@proton.me>. All rights reserved.
+// Use of this source code is governed by a MIT style
+// license that can be found in the LICENSE file. The original repo for
+// this file is https://github.com/Daz-3ux/dBlog.
+
+package user
+
+import (
+	"context"
+	"github.com/Daz-3ux/dBlog/internal/dazBlog/store"
+	"github.com/Daz-3ux/dBlog/internal/pkg/errno"
+	"github.com/Daz-3ux/dBlog/internal/pkg/model"
+	v1 "github.com/Daz-3ux/dBlog/pkg/api/dazBlog/v1"
+	"github.com/jinzhu/copier"
+	"regexp"
+)
+
+// UserBiz defines the methods implemented in the user module at the biz layer
+// implement the specific implementations of the REST resources for the user
+type UserBiz interface {
+	Create(ctx context.Context, r *v1.CreateUserRequest) error
+}
+
+// userBiz implements the UserBiz interface
+type userBiz struct {
+	ds store.IStore
+}
+
+// ensure that userBiz implements the UserBiz interface
+var _ UserBiz = (*userBiz)(nil)
+
+// NewUserBiz create an instance of type UserBiz
+func NewUserBiz(ds store.IStore) UserBiz {
+	return &userBiz{ds: ds}
+}
+
+// Create is the implementation of the `Create` method of the UserBiz interface
+func (b *userBiz) Create(ctx context.Context, r *v1.CreateUserRequest) error {
+	var userM model.UserM
+	_ = copier.Copy(&userM, r)
+
+	if err := b.ds.Users().Create(ctx, &userM); err != nil {
+		if match, _ := regexp.MatchString("Duplicate entry '.*' for key 'username'", err.Error()); match {
+			return errno.ErrUserAlreadyExist
+		}
+
+		return err
+	}
+
+	return nil
+
+}
diff --git a/internal/dazBlog/controller/v1/user/user.go b/internal/dazBlog/controller/v1/user/user.go
new file mode 100644
index 0000000..3c463c4
--- /dev/null
+++ b/internal/dazBlog/controller/v1/user/user.go
@@ -0,0 +1,6 @@
+// Copyright 2023 daz-3ux(杨鹏达) <daz-3ux@proton.me>. All rights reserved.
+// Use of this source code is governed by a MIT style
+// license that can be found in the LICENSE file. The original repo for
+// this file is https://github.com/Daz-3ux/dBlog.
+
+package user
diff --git a/internal/dazBlog/store/store.go b/internal/dazBlog/store/store.go
index 01b62f0..fd5ac3a 100644
--- a/internal/dazBlog/store/store.go
+++ b/internal/dazBlog/store/store.go
@@ -42,7 +42,7 @@ var _ IStore = (*datastore)(nil)
 func NewStore(db *gorm.DB) *datastore {
 	// ensure that the instance is created only once
 	once.Do(func() {
-		S = &datastore{db}
+		S = &datastore{db: db}
 	})
 
 	return S
diff --git a/internal/pkg/errno/user.go b/internal/pkg/errno/user.go
new file mode 100644
index 0000000..06638cc
--- /dev/null
+++ b/internal/pkg/errno/user.go
@@ -0,0 +1,11 @@
+// Copyright 2023 daz-3ux(杨鹏达) <daz-3ux@proton.me>. All rights reserved.
+// Use of this source code is governed by a MIT style
+// license that can be found in the LICENSE file. The original repo for
+// this file is https://github.com/Daz-3ux/dBlog.
+
+package errno
+
+var (
+	// ErrUserAlreadyExist represents user already exists
+	ErrUserAlreadyExist = &Errno{HTTP: 400, Code: "FailedOperation.UserAlreadyExist", Message: "User already exists"}
+)
diff --git a/pkg/api/dazBlog/v1/user.go b/pkg/api/dazBlog/v1/user.go
new file mode 100644
index 0000000..fb935f4
--- /dev/null
+++ b/pkg/api/dazBlog/v1/user.go
@@ -0,0 +1,14 @@
+// Copyright 2023 daz-3ux(杨鹏达) <daz-3ux@proton.me>. All rights reserved.
+// Use of this source code is governed by a MIT style
+// license that can be found in the LICENSE file. The original repo for
+// this file is https://github.com/Daz-3ux/dBlog.
+
+package v1
+
+type CreateUserRequest struct {
+	Username string `json:"username" valid:"alphanum,required,stringlength(1|255)"`
+	Password string `json:"password" valid:"required,stringlength(6|18)"`
+	Nickname string `json:"nickname" valid:"required,stringlength(1|255)"`
+	Email    string `json:"email" valid:"required,email"`
+	Phone    string `json:"phone" valid:"required,numeric,stringlength(11|11)"`
+}