diff --git a/build.gradle b/build.gradle
index 33e2dfb..19d6b59 100644
--- a/build.gradle
+++ b/build.gradle
@@ -35,9 +35,8 @@ dependencies {
 	testImplementation 'org.springframework.security:spring-security-test'
 	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 
-	// postgreSql
-	runtimeOnly 'org.postgresql:postgresql'
-	implementation 'org.postgresql:postgresql:42.7.3'
+	// mysql
+	runtimeOnly 'com.mysql:mysql-connector-j'
 
 	// jwt
 	implementation 'io.jsonwebtoken:jjwt-api:0.11.5'
diff --git a/docker-compose.yml b/docker-compose.yml
index 4ced504..9fb935e 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,13 +1,13 @@
 services:
   db:
-    image: postgres:15
+    image: mysql:8.0
     restart: unless-stopped
     container_name: runners_db
     env_file: .env
     ports:
-      - "5432:5432"
+      - "3306:3306"
     volumes:
-      - runners_db:/var/lib/postgresql/data
+      - runners_db:/var/lib/mysql
 
   app:
     image: openjdk:17-slim
@@ -25,4 +25,3 @@ services:
 
 volumes:
   runners_db:
-
diff --git a/src/main/java/run/backend/domain/auth/controller/AuthController.java b/src/main/java/run/backend/domain/auth/controller/AuthController.java
index e6bb377..57af328 100644
--- a/src/main/java/run/backend/domain/auth/controller/AuthController.java
+++ b/src/main/java/run/backend/domain/auth/controller/AuthController.java
@@ -1,5 +1,6 @@
 package run.backend.domain.auth.controller;
 
+import io.swagger.v3.oas.annotations.Operation;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.PathVariable;
@@ -24,6 +25,7 @@ public class AuthController {
 
     private final AuthService authService;
 
+    @Operation(summary = "소셜 로그인", description = "소셜 로그인 요청 API 입니다.")
     @PostMapping("/{provider}")
     public ResponseEntity<CommonResponse<SignupResponse>> socialLogin(
         @PathVariable String provider, @RequestBody CodeRequest codeRequest) {
@@ -33,6 +35,7 @@ public ResponseEntity<CommonResponse<SignupResponse>> socialLogin(
         return ResponseEntity.ok(new CommonResponse<>("소셜 로그인 요청에 성공했습니다.", response));
     }
 
+    @Operation(summary = "온보딩 유저 정보 입력", description = "온보딩 유저 정보를 입력하는 API 입니다.")
     @PostMapping("/signup")
     public ResponseEntity<CommonResponse<TokenResponse>> signup(
         @RequestPart("signupRequest") SignupRequest signupRequest,
@@ -43,6 +46,7 @@ public ResponseEntity<CommonResponse<TokenResponse>> signup(
         return ResponseEntity.ok(new CommonResponse<>("회원가입이 완료되었습니다.", response));
     }
 
+    @Operation(summary = "토큰 재발급", description = "액세스 토큰 재발급 API 입니다.")
     @PostMapping("/refresh")
     public ResponseEntity<CommonResponse<TokenResponse>> refresh(
         @RequestHeader("Authorization") String authorizationHeader) {
diff --git a/src/main/java/run/backend/domain/file/controller/FileController.java b/src/main/java/run/backend/domain/file/controller/FileController.java
index 7c7be45..6d7b0b8 100644
--- a/src/main/java/run/backend/domain/file/controller/FileController.java
+++ b/src/main/java/run/backend/domain/file/controller/FileController.java
@@ -1,5 +1,6 @@
 package run.backend.domain.file.controller;
 
+import io.swagger.v3.oas.annotations.Operation;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.core.io.Resource;
@@ -23,6 +24,7 @@ public class FileController {
 
     private final FileService fileService;
 
+    @Operation(summary = "프로필 이미지 조회", description = "유저 프로필 이미지를 조회하는 API 입니다.")
     @GetMapping("/profiles/{filename}")
     public ResponseEntity<Resource> getProfileImage(@PathVariable String filename) {
         Resource resource = fileService.getFileResource(filename);
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index d9b36eb..2af2f57 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -3,10 +3,10 @@ spring:
     import: optional:file:.env[.properties]
 
   datasource:
-    url: jdbc:postgresql://${POSTGRES_HOST}:5432/${POSTGRES_DB}
-    username: ${POSTGRES_USER}
-    password: ${POSTGRES_PASSWORD}
-    driver-class-name: org.postgresql.Driver
+    url: jdbc:mysql://${MYSQL_HOST}:3306/${MYSQL_DB}?useSSL=false&serverTimezone=Asia/Seoul&characterEncoding=UTF-8&allowPublicKeyRetrieval=true
+    username: ${MYSQL_USER}
+    password: ${MYSQL_PASSWORD}
+    driver-class-name: com.mysql.cj.jdbc.Driver
 
   web:
     resources:
@@ -15,9 +15,14 @@ spring:
         - file:${file.upload.dir}/
 
   jpa:
-    database: postgresql
+    database: mysql
     hibernate:
       ddl-auto: create
+    properties:
+      hibernate:
+        dialect: org.hibernate.dialect.MySQLDialect
+        format_sql: true
+    show-sql: true
   
   servlet:
     multipart: