diff --git a/eslint.config.mjs b/eslint.config.mjs
index 7f1cc2f..e5aa415 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -4,17 +4,11 @@ import tseslint from 'typescript-eslint';
 import prettierConfig from 'eslint-config-prettier';
 import prettierRecommended from 'eslint-plugin-prettier/recommended';
 
-export default tseslint.config(
-  {
-    files: ['**/*.js', '**/*.mjs', '**/*.ts'],
-    extends: [eslint.configs.recommended, ...tseslint.configs.recommended],
-    rules: {
-      'no-console': 'warn',
-    },
+export default tseslint.config({
+  files: ['**/*.js', '**/*.mjs', '**/*.ts'],
+  extends: [eslint.configs.recommended, ...tseslint.configs.recommended, prettierRecommended],
+  rules: {
+    ...prettierConfig.rules,
+    'no-console': 'warn',
   },
-  {
-    files: ['**/*.js', '**/*.mjs', '**/*.ts'],
-    extends: [prettierRecommended],
-    rules: prettierConfig.rules,
-  },
-);
+});
diff --git a/src/domain/activity/study/controller/study.admin.controller.ts b/src/domain/activity/study/controller/study.admin.controller.ts
index 90c84c8..54be335 100644
--- a/src/domain/activity/study/controller/study.admin.controller.ts
+++ b/src/domain/activity/study/controller/study.admin.controller.ts
@@ -1,9 +1,7 @@
 import { Body, Controller, Delete, Patch, Put } from '@nestjs/common';
 import { ApiOperation, ApiProperty, ApiTags } from '@nestjs/swagger';
 
-import { AuthAdminAccount, AuthAdminAccountException, ReqMember } from '@wink/auth/guard';
-
-import { Member } from '@wink/member/schema';
+import { AuthAdminAccount, AuthAdminAccountException } from '@wink/auth/guard';
 
 import {
   CreateCategoryRequestDto,
@@ -16,6 +14,7 @@ import {
 } from '@wink/activity/dto';
 import {
   AlreadyExistsCategoryException,
+  AlreadyExistsStudyException,
   CategoryNotFoundException,
   StudyNotFoundException,
 } from '@wink/activity/exception';
@@ -65,12 +64,13 @@ export class StudyAdminController {
   @ApiOperation({ summary: '스터디 생성' })
   @ApiProperty({ type: CreateStudyRequestDto })
   @ApiCustomResponse(CreateStudyResponseDto)
-  @ApiCustomErrorResponse([...AuthAdminAccountException, CategoryNotFoundException])
-  async createStudy(
-    @ReqMember() member: Member,
-    @Body() request: CreateStudyRequestDto,
-  ): Promise<CreateStudyResponseDto> {
-    return this.studyAdminService.createStudy(member, request);
+  @ApiCustomErrorResponse([
+    ...AuthAdminAccountException,
+    CategoryNotFoundException,
+    AlreadyExistsStudyException,
+  ])
+  async createStudy(@Body() request: CreateStudyRequestDto): Promise<CreateStudyResponseDto> {
+    return this.studyAdminService.createStudy(request);
   }
 
   @Delete()
diff --git a/src/domain/activity/study/exception/already-exists-study.exception.ts b/src/domain/activity/study/exception/already-exists-study.exception.ts
new file mode 100644
index 0000000..c316d0c
--- /dev/null
+++ b/src/domain/activity/study/exception/already-exists-study.exception.ts
@@ -0,0 +1,13 @@
+import { HttpStatus } from '@nestjs/common';
+
+import { ApiException } from '@wink/swagger';
+
+export class AlreadyExistsStudyException extends ApiException {
+  constructor() {
+    super({
+      swagger: '스터디가 이미 존재하는 경우',
+      message: '스터디가 이미 존재합니다.',
+      code: HttpStatus.CONFLICT,
+    });
+  }
+}
diff --git a/src/domain/activity/study/exception/index.ts b/src/domain/activity/study/exception/index.ts
index 00950df..25a8e11 100644
--- a/src/domain/activity/study/exception/index.ts
+++ b/src/domain/activity/study/exception/index.ts
@@ -1,4 +1,4 @@
 export * from './already-exists-category.exception';
+export * from './already-exists-study.exception';
 export * from './category-not-found.exception';
-
 export * from './study-not-found.exception';
diff --git a/src/domain/activity/study/repository/category.repository.ts b/src/domain/activity/study/repository/category.repository.ts
index b54496e..0591803 100644
--- a/src/domain/activity/study/repository/category.repository.ts
+++ b/src/domain/activity/study/repository/category.repository.ts
@@ -22,10 +22,6 @@ export class CategoryRepository {
     return this.categoryModel.find().exec();
   }
 
-  async findById(id: string): Promise<Category | null> {
-    return this.categoryModel.findById(id).exec();
-  }
-
   async findByName(name: string): Promise<Category | null> {
     return this.categoryModel.findOne({ name }).exec();
   }
diff --git a/src/domain/activity/study/repository/study.repository.ts b/src/domain/activity/study/repository/study.repository.ts
index 26feb0d..051a62f 100644
--- a/src/domain/activity/study/repository/study.repository.ts
+++ b/src/domain/activity/study/repository/study.repository.ts
@@ -28,10 +28,6 @@ export class StudyRepository {
       .exec();
   }
 
-  async findById(id: string): Promise<Study | null> {
-    return this.studyModel.findById(id).exec();
-  }
-
   // Delete
   async deleteById(id: string): Promise<void> {
     await this.studyModel.deleteOne({ _id: id }).exec();
@@ -41,4 +37,8 @@ export class StudyRepository {
   async existsById(id: string): Promise<boolean> {
     return !!(await this.studyModel.exists({ _id: id }).exec());
   }
+
+  async existsByLink(link: string): Promise<boolean> {
+    return !!(await this.studyModel.exists({ link }).exec());
+  }
 }
diff --git a/src/domain/activity/study/service/study.admin.service.ts b/src/domain/activity/study/service/study.admin.service.ts
index 62026cc..4668ff5 100644
--- a/src/domain/activity/study/service/study.admin.service.ts
+++ b/src/domain/activity/study/service/study.admin.service.ts
@@ -1,7 +1,5 @@
 import { Injectable } from '@nestjs/common';
 
-import { Member } from '@wink/member/schema';
-
 import {
   CreateCategoryRequestDto,
   CreateCategoryResponseDto,
@@ -13,6 +11,7 @@ import {
 } from '@wink/activity/dto';
 import {
   AlreadyExistsCategoryException,
+  AlreadyExistsStudyException,
   CategoryNotFoundException,
   StudyNotFoundException,
 } from '@wink/activity/exception';
@@ -59,22 +58,24 @@ export class StudyAdminService {
     await this.categoryRepository.deleteById(categoryId);
   }
 
-  async createStudy(
-    member: Member,
-    { link }: CreateStudyRequestDto,
-  ): Promise<CreateStudyResponseDto> {
+  async createStudy({ link }: CreateStudyRequestDto): Promise<CreateStudyResponseDto> {
+    if (await this.studyRepository.existsByLink(link)) {
+      throw new AlreadyExistsStudyException();
+    }
+
     const { data: html } = await axios.get(link);
     const $ = cheerio.load(html);
 
     const title = $('meta[property="og:title"]').attr('content')!;
     const content = $('meta[property="og:description"]').attr('content')!;
+    const author = $('meta[property="og.article.author"]').attr('content')!;
     const image = $('meta[property="og:image"]').attr('content')!;
-    const uploadedAt = $('meta[property="article:published_time"]').attr('content')!;
+    const rawUploadedAt = $('meta[property="article:published_time"]').attr('content')!;
+    const uploadedAt = new Date(new Date(rawUploadedAt).getTime() + 9 * 60 * 60 * 1000);
 
     const entryInfoMatch = html.match(/window\.T\.entryInfo\s*=\s*({[^}]*});/);
     const entryInfo = entryInfoMatch ? JSON.parse(entryInfoMatch[1]) : null;
     const categoryLabel = entryInfo['categoryLabel'];
-
     const category = await this.categoryRepository.findByName(categoryLabel);
 
     if (!category) {
@@ -82,11 +83,11 @@ export class StudyAdminService {
     }
 
     const study: Partial<Study> = {
-      author: member,
       title,
       content,
+      author,
       image,
-      uploadedAt: new Date(uploadedAt),
+      uploadedAt,
       link,
       category,
     };
diff --git a/src/domain/member/constant/Role.ts b/src/domain/member/constant/Role.ts
deleted file mode 100644
index 00b7e5b..0000000
--- a/src/domain/member/constant/Role.ts
+++ /dev/null
@@ -1,34 +0,0 @@
-export enum Role {
-  PRESIDENT = 'PRESIDENT',
-  VICE_PRESIDENT = 'VICE_PRESIDENT',
-  TREASURY_HEAD = 'TREASURY_HEAD',
-  TREASURY_ASSISTANT = 'TREASURY_ASSISTANT',
-  PUBLIC_RELATIONS_HEAD = 'PUBLIC_RELATIONS_HEAD',
-  PUBLIC_RELATIONS_ASSISTANT = 'PUBLIC_RELATIONS_ASSISTANT',
-  PLANNING_HEAD = 'PLANNING_HEAD',
-  PLANNING_ASSISTANT = 'PLANNING_ASSISTANT',
-  MEMBER = 'MEMBER',
-}
-
-const roleHierarchy: { [key: string]: number } = {
-  [Role.PRESIDENT]: 1,
-
-  [Role.VICE_PRESIDENT]: 2,
-
-  [Role.TREASURY_HEAD]: 3,
-  [Role.PUBLIC_RELATIONS_HEAD]: 3,
-  [Role.PLANNING_HEAD]: 3,
-
-  [Role.TREASURY_ASSISTANT]: 4,
-  [Role.PUBLIC_RELATIONS_ASSISTANT]: 4,
-  [Role.PLANNING_ASSISTANT]: 4,
-
-  [Role.MEMBER]: 5,
-};
-
-export const checkRoleHierarchy = (myRole: Role, targetRole: Role): boolean => {
-  const myRoleIndex = roleHierarchy[myRole];
-  const targetRoleIndex = roleHierarchy[targetRole];
-
-  return myRoleIndex < targetRoleIndex;
-};
diff --git a/src/domain/member/constant/index.ts b/src/domain/member/constant/index.ts
deleted file mode 100644
index 940d536..0000000
--- a/src/domain/member/constant/index.ts
+++ /dev/null
@@ -1 +0,0 @@
-export * from './Role';
diff --git a/src/domain/member/repository/member.repository.ts b/src/domain/member/repository/member.repository.ts
index d163ad9..92ed673 100644
--- a/src/domain/member/repository/member.repository.ts
+++ b/src/domain/member/repository/member.repository.ts
@@ -36,27 +36,27 @@ export class MemberRepository {
   }
 
   // Update
-  async updatePassword(id: string, password: string): Promise<void> {
+  async updatePasswordById(id: string, password: string): Promise<void> {
     await this.memberModel.updateOne({ _id: id }, { password }).exec();
   }
 
-  async updateDescription(id: string, description: string | null): Promise<void> {
+  async updateDescriptionById(id: string, description: string | null): Promise<void> {
     await this.memberModel.updateOne({ _id: id }, { description }).exec();
   }
 
-  async updateGithub(id: string, githubUrl: string | null): Promise<void> {
+  async updateGithubUrlById(id: string, githubUrl: string | null): Promise<void> {
     await this.memberModel.updateOne({ _id: id }, { 'link.github': githubUrl }).exec();
   }
 
-  async updateInstagram(id: string, instagramUrl: string | null): Promise<void> {
+  async updateInstagramUrlById(id: string, instagramUrl: string | null): Promise<void> {
     await this.memberModel.updateOne({ _id: id }, { 'link.instagram': instagramUrl }).exec();
   }
 
-  async updateBlog(id: string, blog: string | null): Promise<void> {
+  async updateBlogById(id: string, blog: string | null): Promise<void> {
     await this.memberModel.updateOne({ _id: id }, { 'link.blog': blog }).exec();
   }
 
-  async updateAvatar(id: string, avatar: string | null): Promise<void> {
+  async updateAvatarById(id: string, avatar: string | null): Promise<void> {
     await this.memberModel.updateOne({ _id: id }, { avatar }).exec();
   }
 
diff --git a/src/domain/member/service/member.service.ts b/src/domain/member/service/member.service.ts
index c489120..c27de16 100644
--- a/src/domain/member/service/member.service.ts
+++ b/src/domain/member/service/member.service.ts
@@ -48,10 +48,10 @@ export class MemberService {
   ): Promise<void> {
     const { _id: id } = member;
 
-    await this.memberRepository.updateDescription(id, description);
-    await this.memberRepository.updateGithub(id, github);
-    await this.memberRepository.updateInstagram(id, instagram);
-    await this.memberRepository.updateBlog(id, blog);
+    await this.memberRepository.updateDescriptionById(id, description);
+    await this.memberRepository.updateGithubUrlById(id, github);
+    await this.memberRepository.updateInstagramUrlById(id, instagram);
+    await this.memberRepository.updateBlogById(id, blog);
 
     this.eventEmitter.emit(
       UpdateMyInfoEvent.EVENT_NAME,
@@ -73,7 +73,7 @@ export class MemberService {
     const salt = await bcrypt.genSalt(10);
     const hash = await bcrypt.hash(newPassword, salt);
 
-    await this.memberRepository.updatePassword(id, hash);
+    await this.memberRepository.updatePasswordById(id, hash);
 
     this.eventEmitter.emit(UpdateMyPasswordEvent.EVENT_NAME, new UpdateMyPasswordEvent(member));
   }
@@ -85,7 +85,7 @@ export class MemberService {
     const { _id: id, avatar: original } = member;
 
     const avatar = await this.avatarService.upload(file);
-    await this.memberRepository.updateAvatar(id, avatar);
+    await this.memberRepository.updateAvatarById(id, avatar);
 
     if (original) {
       const key = this.avatarService.extractKeyFromUrl(original);
@@ -105,7 +105,7 @@ export class MemberService {
       const key = this.avatarService.extractKeyFromUrl(avatar);
 
       await this.avatarService.delete(key);
-      await this.memberRepository.updateAvatar(id, null);
+      await this.memberRepository.updateAvatarById(id, null);
 
       this.eventEmitter.emit(DeleteMyAvatarEvent.EVENT_NAME, new DeleteMyAvatarEvent(member));
     }
diff --git a/test/mock/module/auth.mock.ts b/test/mock/module/auth.mock.ts
index 64903b5..039e314 100644
--- a/test/mock/module/auth.mock.ts
+++ b/test/mock/module/auth.mock.ts
@@ -15,7 +15,6 @@ import { AuthService } from '@wink/auth/service';
 import { MemberRepository } from '@wink/member/repository';
 import { Member } from '@wink/member/schema';
 
-import { RedisService } from '@wink/redis';
 import { MailService } from '@wink/mail';
 import { ConfigService } from '@nestjs/config';