diff --git a/src/app.module.ts b/src/app.module.ts
index b7573bc..d11a850 100644
--- a/src/app.module.ts
+++ b/src/app.module.ts
@@ -7,7 +7,7 @@ import { AppService } from "./app.service";
 import { AuthModule } from "./auth/auth.module";
 import { dataSourceOptions } from "./config/data-source";
 import { validate } from "./config/env.validation";
-import { UsersModule } from "./users/users.module";
+import { UserModule } from "./user/user.module";
 
 @Module({
   imports: [
@@ -15,7 +15,7 @@ import { UsersModule } from "./users/users.module";
       validate,
     }),
     TypeOrmModule.forRoot(dataSourceOptions),
-    UsersModule,
+    UserModule,
     AuthModule,
   ],
   controllers: [AppController],
diff --git a/src/auth/auth.controller.spec.ts b/src/auth/auth.controller.spec.ts
index 9e60a47..79f37aa 100644
--- a/src/auth/auth.controller.spec.ts
+++ b/src/auth/auth.controller.spec.ts
@@ -10,12 +10,12 @@ import { getRepositoryToken, TypeOrmModule } from "@nestjs/typeorm";
 import { plainToInstance } from "class-transformer";
 import { validate } from "class-validator";
 import { dataSourceJest } from "src/config/data-source";
-import { UserEntity } from "src/users/entities/user.entity";
-import { CreateUserRespose } from "src/users/resposes/create-user-respose";
-import { UsersService } from "src/users/users.service";
+import { UserEntity } from "src/user/entities/user.entity";
+import { CreateUserRespose } from "src/user/resposes/create-user-respose";
+import { UserService } from "src/user/user.service";
 import { Repository } from "typeorm";
 
-import { CreateUserDto } from "../users/dto/create-user.dto";
+import { CreateUserDto } from "../user/dto/create-user.dto";
 import { AuthController } from "./auth.controller";
 import { AuthService } from "./auth.service";
 
@@ -36,7 +36,7 @@ describe("AuthController", () => {
       controllers: [AuthController],
       providers: [
         AuthService,
-        UsersService,
+        UserService,
         {
           provide: getRepositoryToken(UserEntity),
           useValue: UserEntity, // 使用測試資料庫的 Repository
diff --git a/src/auth/auth.controller.ts b/src/auth/auth.controller.ts
index 47cd518..0f4c827 100644
--- a/src/auth/auth.controller.ts
+++ b/src/auth/auth.controller.ts
@@ -6,10 +6,10 @@ import {
   ApiOperation,
   ApiTags,
 } from "@nestjs/swagger";
-import { CreateUserDto } from "src/users/dto/create-user.dto";
-import { CreateUserBadrequestError } from "src/users/exceptions/create-user-badrequest-error.exception";
-import { CreateUserConflictError } from "src/users/exceptions/create-user-conflict-error.exception";
-import { CreateUserRespose } from "src/users/resposes/create-user-respose";
+import { CreateUserDto } from "src/user/dto/create-user.dto";
+import { CreateUserBadrequestError } from "src/user/exceptions/create-user-badrequest-error.exception";
+import { CreateUserConflictError } from "src/user/exceptions/create-user-conflict-error.exception";
+import { CreateUserRespose } from "src/user/resposes/create-user-respose";
 
 import { AuthService } from "./auth.service";
 
diff --git a/src/auth/auth.module.ts b/src/auth/auth.module.ts
index 359d3b5..72bc4bd 100644
--- a/src/auth/auth.module.ts
+++ b/src/auth/auth.module.ts
@@ -1,13 +1,13 @@
 import { Module } from "@nestjs/common";
 import { TypeOrmModule } from "@nestjs/typeorm";
-import { UserEntity } from "src/users/entities/user.entity";
-import { UsersModule } from "src/users/users.module";
+import { UserEntity } from "src/user/entities/user.entity";
+import { UserModule } from "src/user/user.module";
 
 import { AuthController } from "./auth.controller";
 import { AuthService } from "./auth.service";
 
 @Module({
-  imports: [UsersModule, TypeOrmModule.forFeature([UserEntity])],
+  imports: [UserModule, TypeOrmModule.forFeature([UserEntity])],
   controllers: [AuthController],
   providers: [AuthService],
 })
diff --git a/src/auth/auth.service.spec.ts b/src/auth/auth.service.spec.ts
index e106ef0..771b808 100644
--- a/src/auth/auth.service.spec.ts
+++ b/src/auth/auth.service.spec.ts
@@ -3,9 +3,9 @@ import { Test, TestingModule } from "@nestjs/testing";
 import { getRepositoryToken, TypeOrmModule } from "@nestjs/typeorm";
 import { validate } from "class-validator";
 import { dataSourceJest } from "src/config/data-source";
-import { CreateUserDto } from "src/users/dto/create-user.dto";
-import { UserEntity } from "src/users/entities/user.entity";
-import { UsersService } from "src/users/users.service";
+import { CreateUserDto } from "src/user/dto/create-user.dto";
+import { UserEntity } from "src/user/entities/user.entity";
+import { UserService } from "src/user/user.service";
 import { Repository } from "typeorm";
 
 import { AuthService } from "./auth.service";
@@ -19,7 +19,7 @@ describe("AuthService", () => {
       imports: [TypeOrmModule.forRoot(dataSourceJest)],
       providers: [
         AuthService,
-        UsersService,
+        UserService,
         {
           provide: getRepositoryToken(UserEntity),
           useValue: UserEntity, // 使用測試資料庫的 Repository
diff --git a/src/auth/auth.service.ts b/src/auth/auth.service.ts
index 46294f8..7afab79 100644
--- a/src/auth/auth.service.ts
+++ b/src/auth/auth.service.ts
@@ -1,14 +1,14 @@
 import { ConflictException, Injectable } from "@nestjs/common";
 import { InjectRepository } from "@nestjs/typeorm";
-import { CreateUserDto } from "src/users/dto/create-user.dto";
-import { UserEntity } from "src/users/entities/user.entity";
-import { UsersService } from "src/users/users.service";
+import { CreateUserDto } from "src/user/dto/create-user.dto";
+import { UserEntity } from "src/user/entities/user.entity";
+import { UserService } from "src/user/user.service";
 import { Repository } from "typeorm";
 
 @Injectable()
 export class AuthService {
   constructor(
-    private usersService: UsersService,
+    private userService: UserService,
     @InjectRepository(UserEntity)
     private userRepository: Repository<UserEntity>,
   ) {}
@@ -27,6 +27,6 @@ export class AuthService {
       });
       throw new ConflictException(conflictedAttributes);
     }
-    return this.usersService.create(userDto);
+    return this.userService.create(userDto);
   }
 }
diff --git a/src/config/data-source.ts b/src/config/data-source.ts
index 50155d5..ac0fd77 100644
--- a/src/config/data-source.ts
+++ b/src/config/data-source.ts
@@ -1,5 +1,5 @@
 import * as dotenv from "dotenv";
-import { UserEntity } from "src/users/entities/user.entity";
+import { UserEntity } from "src/user/entities/user.entity";
 import { DataSource, DataSourceOptions } from "typeorm";
 
 dotenv.config();
diff --git a/src/users/dto/create-user.dto.ts b/src/user/dto/create-user.dto.ts
similarity index 100%
rename from src/users/dto/create-user.dto.ts
rename to src/user/dto/create-user.dto.ts
diff --git a/src/users/entities/user.entity.ts b/src/user/entities/user.entity.ts
similarity index 100%
rename from src/users/entities/user.entity.ts
rename to src/user/entities/user.entity.ts
diff --git a/src/users/exceptions/create-user-badrequest-error.exception.ts b/src/user/exceptions/create-user-badrequest-error.exception.ts
similarity index 100%
rename from src/users/exceptions/create-user-badrequest-error.exception.ts
rename to src/user/exceptions/create-user-badrequest-error.exception.ts
diff --git a/src/users/exceptions/create-user-conflict-error.exception.ts b/src/user/exceptions/create-user-conflict-error.exception.ts
similarity index 100%
rename from src/users/exceptions/create-user-conflict-error.exception.ts
rename to src/user/exceptions/create-user-conflict-error.exception.ts
diff --git a/src/users/resposes/create-user-respose.ts b/src/user/resposes/create-user-respose.ts
similarity index 100%
rename from src/users/resposes/create-user-respose.ts
rename to src/user/resposes/create-user-respose.ts
diff --git a/src/user/user.module.ts b/src/user/user.module.ts
new file mode 100644
index 0000000..01f5337
--- /dev/null
+++ b/src/user/user.module.ts
@@ -0,0 +1,9 @@
+import { Module } from "@nestjs/common";
+
+import { UserService } from "./user.service";
+
+@Module({
+  providers: [UserService],
+  exports: [UserService],
+})
+export class UserModule {}
diff --git a/src/users/users.service.spec.ts b/src/user/user.service.spec.ts
similarity index 85%
rename from src/users/users.service.spec.ts
rename to src/user/user.service.spec.ts
index 94c14c4..1b412d0 100644
--- a/src/users/users.service.spec.ts
+++ b/src/user/user.service.spec.ts
@@ -5,16 +5,16 @@ import { dataSourceJest } from "src/config/data-source";
 
 import { CreateUserDto } from "./dto/create-user.dto";
 import { UserEntity } from "./entities/user.entity";
-import { UsersService } from "./users.service";
+import { UserService } from "./user.service";
 
-describe("UsersService", () => {
-  let userService: UsersService;
+describe("UserService", () => {
+  let userService: UserService;
 
   beforeEach(async () => {
     const module: TestingModule = await Test.createTestingModule({
       imports: [TypeOrmModule.forRoot(dataSourceJest)],
       providers: [
-        UsersService,
+        UserService,
         {
           provide: getRepositoryToken(UserEntity),
           useValue: UserEntity, // 使用測試資料庫的 Repository
@@ -22,7 +22,7 @@ describe("UsersService", () => {
       ],
     }).compile();
 
-    userService = module.get<UsersService>(UsersService);
+    userService = module.get<UserService>(UserService);
   });
 
   it("應該會創建 一個使用者", async () => {
diff --git a/src/users/users.service.ts b/src/user/user.service.ts
similarity index 95%
rename from src/users/users.service.ts
rename to src/user/user.service.ts
index 2a454de..c9539a4 100644
--- a/src/users/users.service.ts
+++ b/src/user/user.service.ts
@@ -5,7 +5,7 @@ import { CreateUserDto } from "./dto/create-user.dto";
 import { UserEntity } from "./entities/user.entity";
 
 @Injectable()
-export class UsersService {
+export class UserService {
   async create(userDto: CreateUserDto) {
     const hash = await bcrypt.hashSync(userDto.password, 5);
     const user = new UserEntity();
diff --git a/src/users/users.module.ts b/src/users/users.module.ts
deleted file mode 100644
index cb7270c..0000000
--- a/src/users/users.module.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-import { Module } from "@nestjs/common";
-
-import { UsersService } from "./users.service";
-
-@Module({
-  providers: [UsersService],
-  exports: [UsersService],
-})
-export class UsersModule {}