diff --git a/web3-credential-server/build/resources/main/application.properties b/web3-credential-server/build/resources/main/application.properties
index 9fd291c..fd411bc 100644
--- a/web3-credential-server/build/resources/main/application.properties
+++ b/web3-credential-server/build/resources/main/application.properties
@@ -54,14 +54,13 @@ spring.mvc.cors.allowed-origin-patterns=http://localhost:8080
 spring.mvc.cors.allow-credentials=true
 
 # AWS S3 Service bucket
-cloud.aws.s3.bucket=
-cloud.aws.region.static=ap-northeast-2
-cloud.aws.credentials.accessKey=
-cloud.aws.credentials.secretKey=
-cloud.aws.stack.auto=false
-
+cloud.aws.s3-bucket-name=
 # AWS S3 Bucket URL
-cloud.aws.s3.bucket.url=
+cloud.aws.s3-bucket-url=
+cloud.aws.region-static=ap-northeast-2
+cloud.aws.credentials-accessKey=
+cloud.aws.credentials-secretKey=
+cloud.aws.stack.auto=false
 
 
 
diff --git a/web3-credential-server/build/tmp/compileJava/previous-compilation-data.bin b/web3-credential-server/build/tmp/compileJava/previous-compilation-data.bin
index 21ae870..3d0270c 100644
Binary files a/web3-credential-server/build/tmp/compileJava/previous-compilation-data.bin and b/web3-credential-server/build/tmp/compileJava/previous-compilation-data.bin differ
diff --git a/web3-credential-server/src/main/java/web3/Application.java b/web3-credential-server/src/main/java/web3/Application.java
index 9d8b67b..29a58f5 100644
--- a/web3-credential-server/src/main/java/web3/Application.java
+++ b/web3-credential-server/src/main/java/web3/Application.java
@@ -5,7 +5,7 @@
 import org.springframework.boot.context.properties.ConfigurationPropertiesScan;
 
 @SpringBootApplication
-@ConfigurationPropertiesScan("web3.properties.kakao")
+@ConfigurationPropertiesScan("web3.properties")
 public class Application {
     public static void main(String[] args) {
         SpringApplication.run(Application.class, args);
diff --git a/web3-credential-server/src/main/java/web3/auth/util/JwtTokenUtil.java b/web3-credential-server/src/main/java/web3/auth/util/JwtTokenUtil.java
index ab031fa..97e8601 100644
--- a/web3-credential-server/src/main/java/web3/auth/util/JwtTokenUtil.java
+++ b/web3-credential-server/src/main/java/web3/auth/util/JwtTokenUtil.java
@@ -5,17 +5,20 @@
 import io.jsonwebtoken.Jwts;
 import io.jsonwebtoken.SignatureAlgorithm;
 import io.jsonwebtoken.security.Keys;
+import lombok.RequiredArgsConstructor;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Component;
+import web3.properties.JwtProperties;
+import web3.properties.KakaoProperties;
 
 import java.util.Date;
 
 
 @Component
+@RequiredArgsConstructor
 public class JwtTokenUtil {
 
-    @Value("${jwt.key}")
-    private String secretKey;
+    private final JwtProperties jwtProperties;
 
     @Value("${jwt.access-token-validity}")
     private long accessTokenValidityMilliseconds;
@@ -39,7 +42,7 @@ public boolean validateToken(String token) {
         try {
 
             Jwts.parserBuilder()
-                    .setSigningKey(secretKey.getBytes())
+                    .setSigningKey(jwtProperties.key().getBytes())
                     .build()
                     .parseClaimsJws(token);
 
@@ -56,7 +59,7 @@ public boolean validateToken(String token) {
 
     public Claims getClaimsFromToken(String token) {
         return Jwts.parserBuilder()
-                .setSigningKey(secretKey.getBytes())
+                .setSigningKey(jwtProperties.key().getBytes())
                 .build()
                 .parseClaimsJws(token)
                 .getBody();
@@ -70,7 +73,7 @@ private String generateToken(String email, long validityMilliseconds) {
                 .setSubject(email)
                 .setIssuedAt(now)
                 .setExpiration(validity)
-                .signWith(Keys.hmacShaKeyFor(secretKey.getBytes()), SignatureAlgorithm.HS256)
+                .signWith(Keys.hmacShaKeyFor(jwtProperties.key().getBytes()), SignatureAlgorithm.HS256)
                 .compact();
     }
 }
diff --git a/web3-credential-server/src/main/java/web3/controller/kakao/AdminKakaoController.java b/web3-credential-server/src/main/java/web3/controller/kakao/AdminKakaoController.java
index ffdc16c..d20bb33 100644
--- a/web3-credential-server/src/main/java/web3/controller/kakao/AdminKakaoController.java
+++ b/web3-credential-server/src/main/java/web3/controller/kakao/AdminKakaoController.java
@@ -4,7 +4,7 @@
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
-import web3.properties.kakao.KakaoProperties;
+import web3.properties.KakaoProperties;
 
 @Controller
 @RequestMapping("/admin/kakao")
diff --git a/web3-credential-server/src/main/java/web3/controller/kakao/KakaoController.java b/web3-credential-server/src/main/java/web3/controller/kakao/KakaoController.java
index affe592..d01a152 100644
--- a/web3-credential-server/src/main/java/web3/controller/kakao/KakaoController.java
+++ b/web3-credential-server/src/main/java/web3/controller/kakao/KakaoController.java
@@ -8,9 +8,9 @@
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.util.UriComponentsBuilder;
-import web3.properties.kakao.KakaoProperties;
+import web3.properties.KakaoProperties;
 import web3.domain.user.User;
-import web3.common.dto.user.UserInfoDto;
+import web3.service.dto.user.UserInfoDto;
 import web3.service.kakao.KakaoService;
 import web3.validation.LoginMember;
 
diff --git a/web3-credential-server/src/main/java/web3/properties/JwtProperties.java b/web3-credential-server/src/main/java/web3/properties/JwtProperties.java
new file mode 100644
index 0000000..fb3700a
--- /dev/null
+++ b/web3-credential-server/src/main/java/web3/properties/JwtProperties.java
@@ -0,0 +1,9 @@
+package web3.properties;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+@ConfigurationProperties(prefix = "jwt")
+public record JwtProperties (
+        String key
+){
+}
diff --git a/web3-credential-server/src/main/java/web3/properties/kakao/KakaoProperties.java b/web3-credential-server/src/main/java/web3/properties/KakaoProperties.java
similarity index 91%
rename from web3-credential-server/src/main/java/web3/properties/kakao/KakaoProperties.java
rename to web3-credential-server/src/main/java/web3/properties/KakaoProperties.java
index 474cec7..b26f891 100644
--- a/web3-credential-server/src/main/java/web3/properties/kakao/KakaoProperties.java
+++ b/web3-credential-server/src/main/java/web3/properties/KakaoProperties.java
@@ -1,4 +1,4 @@
-package web3.properties.kakao;
+package web3.properties;
 
 import org.springframework.boot.context.properties.ConfigurationProperties;
 
diff --git a/web3-credential-server/src/main/java/web3/properties/S3Properties.java b/web3-credential-server/src/main/java/web3/properties/S3Properties.java
new file mode 100644
index 0000000..9f8767a
--- /dev/null
+++ b/web3-credential-server/src/main/java/web3/properties/S3Properties.java
@@ -0,0 +1,40 @@
+package web3.properties;
+
+import lombok.Getter;
+import lombok.Setter;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+import jakarta.annotation.PostConstruct;
+import software.amazon.awssdk.auth.credentials.AwsBasicCredentials;
+import software.amazon.awssdk.auth.credentials.StaticCredentialsProvider;
+import software.amazon.awssdk.regions.Region;
+import software.amazon.awssdk.services.s3.S3Client;
+
+@Configuration
+@ConfigurationProperties(prefix = "cloud.aws")
+@Getter
+@Setter
+@Slf4j
+public class S3Properties {
+
+    private String s3BucketName;
+    private String credentialsAccessKey;
+    private String credentialsSecretKey;
+    private String s3BucketUrl;
+    private String regionStatic;
+    private S3Client s3Client;
+
+    @PostConstruct
+    public void init() {
+        if (regionStatic == null || regionStatic.trim().isEmpty()) {
+            throw new IllegalStateException("Region must not be null or empty");
+        }
+        this.s3Client = S3Client.builder()
+                .region(Region.of(regionStatic))
+                .credentialsProvider(StaticCredentialsProvider.create(
+                        AwsBasicCredentials.create(credentialsAccessKey, credentialsSecretKey)))
+                .build();
+    }
+
+}
diff --git a/web3-credential-server/src/main/java/web3/s3Storage/config/S3Config.java b/web3-credential-server/src/main/java/web3/s3Storage/config/S3Config.java
index 96969cc..b37017a 100644
--- a/web3-credential-server/src/main/java/web3/s3Storage/config/S3Config.java
+++ b/web3-credential-server/src/main/java/web3/s3Storage/config/S3Config.java
@@ -1,21 +1,23 @@
 package web3.s3Storage.config;
 
+import lombok.RequiredArgsConstructor;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import software.amazon.awssdk.regions.Region;
 import software.amazon.awssdk.services.s3.S3Client;
-import org.springframework.beans.factory.annotation.Value;
-
+import web3.properties.S3Properties;
+/*
 @Configuration
+@RequiredArgsConstructor
 public class S3Config {
-
-    @Value("${cloud.aws.region.static}")
-    private String region;
-
+    private final S3Properties s3Properties;
     @Bean
     public S3Client s3Client() {
         return S3Client.builder()
-                .region(Region.of(region))
+                .region(Region.of(s3Properties.getRegionStatic()))
                 .build();
     }
-}
\ No newline at end of file
+
+}
+
+ */
\ No newline at end of file
diff --git a/web3-credential-server/src/main/java/web3/s3Storage/controller/S3StorageController.java b/web3-credential-server/src/main/java/web3/s3Storage/controller/S3StorageController.java
index 9e0400a..5c05f5a 100644
--- a/web3-credential-server/src/main/java/web3/s3Storage/controller/S3StorageController.java
+++ b/web3-credential-server/src/main/java/web3/s3Storage/controller/S3StorageController.java
@@ -100,13 +100,4 @@ public ResponseEntity<String> getPdfKey(@RequestParam String pdfUrl,
         return ResponseEntity.ok().body(metadata);
     }
 
-
-
-    /*//스케줄러 용
-    @GetMapping("/all/photourl")
-    public ResponseEntity<List<String>> getAllImageUrls() {
-        List<String> imageUrls = s3StorageService.getAllImageUrls();
-        return ResponseEntity.ok(imageUrls);
-    }*/
-
 }
\ No newline at end of file
diff --git a/web3-credential-server/src/main/java/web3/s3Storage/service/S3StorageService.java b/web3-credential-server/src/main/java/web3/s3Storage/service/S3StorageService.java
index a34ed33..b17fc20 100644
--- a/web3-credential-server/src/main/java/web3/s3Storage/service/S3StorageService.java
+++ b/web3-credential-server/src/main/java/web3/s3Storage/service/S3StorageService.java
@@ -1,21 +1,18 @@
 package web3.s3Storage.service;
 
 import jakarta.annotation.PreDestroy;
+import lombok.extern.slf4j.Slf4j;
 import org.apache.pdfbox.multipdf.PDFMergerUtility;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Service;
 import org.springframework.web.multipart.MultipartFile;
-import software.amazon.awssdk.auth.credentials.AwsBasicCredentials;
-import software.amazon.awssdk.auth.credentials.StaticCredentialsProvider;
 import software.amazon.awssdk.core.ResponseInputStream;
 import software.amazon.awssdk.core.sync.RequestBody;
-import software.amazon.awssdk.regions.Region;
 import software.amazon.awssdk.services.s3.S3Client;
 import software.amazon.awssdk.services.s3.model.*;
 import web3.domain.wallet.Wallet;
+import web3.properties.S3Properties;
 import web3.repository.wallet.WalletRepository;
 
 import java.io.*;
@@ -23,28 +20,17 @@
 import java.util.Map;
 import java.util.UUID;
 
+@Slf4j
 @Service
 public class S3StorageService {
 
+    private final S3Properties s3Properties;
     private final S3Client s3Client;
-    private final String bucketName;
-    private final String bucketUrl;
-
     private final WalletRepository walletRepository;
 
-    @Autowired
-    public S3StorageService(@Value("${cloud.aws.credentials.accessKey}") String accessKey,
-                            @Value("${cloud.aws.credentials.secretKey}") String secretKey,
-                            @Value("${cloud.aws.s3.bucket}") String bucketName,
-                            @Value("${cloud.aws.s3.bucket.url}") String bucketUrl,
-                            WalletRepository walletRepository) {
-        this.s3Client = S3Client.builder()
-                .region(Region.AP_NORTHEAST_2) // 원하는 리전을 지정해야 합니다.
-                .credentialsProvider(StaticCredentialsProvider.create(
-                        AwsBasicCredentials.create(accessKey, secretKey)))
-                .build();
-        this.bucketName = bucketName;
-        this.bucketUrl = bucketUrl;
+    public S3StorageService(S3Properties s3Properties, WalletRepository walletRepository) {
+        this.s3Properties = s3Properties;
+        this.s3Client = s3Properties.getS3Client();
         this.walletRepository = walletRepository;
     }
 
@@ -56,10 +42,12 @@ public String uploadPdf(MultipartFile file, Wallet wallet,String pdfInfo,String
 
         //첫 등록일때 => 생성해줘야함
         if (wallet.getPdfUrl() == null){
-            System.out.println("file = " + file);
+            log.info("file = {}", file);
 
             fileName = (file.getSize() > 0) ? getFileName(file, wallet): getEmptyFilename(wallet);
-            System.out.println("fileName = " + fileName);
+
+            log.info("fileName = {}", fileName);
+
             // PDF 파일 확장자 검증
             //validatePdfFile(fileName);
             result = (file.getSize() > 0) ? file.getBytes():createEmptyPdf();
@@ -69,15 +57,15 @@ public String uploadPdf(MultipartFile file, Wallet wallet,String pdfInfo,String
             //이미 있을시 -> pdf 병합
             String destination = wallet.getPdfUrl();
             fileName = extractKeyFromUrl(destination);
-            System.out.println("destination = " + destination);
-            System.out.println("fileName = " + fileName);
+            log.info("destination = {}", destination);
+            log.info("fileName = {}", fileName);
 
             byte[] first = getPdf(destination).readAllBytes();//원래 파일
             byte[] second = (file.getSize() > 0) ? file.getBytes() : createEmptyPdf(); //뒤에 들어온 파일
 
             nowPage = getPdfPageCount(first)+1;
             result = mergePdfs(first, second);
-            System.out.println("merge Success");
+            log.info("merge Success");
 
 
             metadata= getPdfMetadata(fileName);
@@ -86,26 +74,26 @@ public String uploadPdf(MultipartFile file, Wallet wallet,String pdfInfo,String
         String page = "page-" + nowPage; // 키 설정
         String value = pdfInfo + ":" + pdfKey;
         metadata.put(page,value); // 키-값 쌍으로 추가
-        System.out.println("metadata = " + metadata);
-
+        log.info("metadata = {}", metadata);
 
         try {
             // S3에 PDF 파일 업로드
             PutObjectRequest putRequest = PutObjectRequest.builder()
-                    .bucket(bucketName)
+                    .bucket(s3Properties.getS3BucketName())
                     .key(fileName)
                     .contentType(file.getContentType())
                     .metadata(metadata)
                     .build();
 
-            // PutObject 요청 수행
             s3Client.putObject(putRequest, RequestBody.fromBytes(result));
 
         } catch (S3Exception e) {
             throw new IOException("Failed to upload pdf to S3: " + e.getMessage());
         }
+
         wallet.updatePdfUrl(getpdfUrl(fileName));
         walletRepository.saveAndFlush(wallet);
+
         return getpdfUrl(fileName);
     }
 
@@ -174,7 +162,7 @@ public String replacePdfPage(Wallet wallet, int pageNumberToRemove, MultipartFil
         // 최종 PDF를 S3에 업로드
         try {
             PutObjectRequest putRequest = PutObjectRequest.builder()
-                    .bucket(bucketName)
+                    .bucket(s3Properties.getS3BucketName())
                     .key(fileName)
                     .contentType(newPdfFile.getContentType())
                     .metadata(metadata)
@@ -277,7 +265,7 @@ public HashMap<String, String> getPdfMetadata( String pdfUrl) {
         try {
             HeadObjectResponse response = s3Client.headObject(
                     HeadObjectRequest.builder()
-                            .bucket(bucketName)
+                            .bucket(s3Properties.getS3BucketName())
                             .key(fileName)
                             .build());
 
@@ -300,7 +288,7 @@ public String getMetadataForPage(String pdfUrl, int pageNumber) {
         String fileName = extractKeyFromUrl(pdfUrl);
 
         GetObjectRequest getRequest = GetObjectRequest.builder()
-                .bucket(bucketName)
+                .bucket(s3Properties.getS3BucketName())
                 .key(fileName)
                 .build();
 
@@ -324,7 +312,7 @@ public String getPdfKeyForPage(String pdfUrl, int pageNumber) {
         String fileName = extractKeyFromUrl(pdfUrl);
 
         GetObjectRequest getRequest = GetObjectRequest.builder()
-                .bucket(bucketName)
+                .bucket(s3Properties.getS3BucketName())
                 .key(fileName)
                 .build();
 
@@ -365,7 +353,7 @@ public void deletePdf(String urlToDelete) {
         System.out.println("key = " + key);
         try {
             s3Client.deleteObject(DeleteObjectRequest.builder()
-                    .bucket(bucketName)
+                    .bucket(s3Properties.getS3BucketName())
                     .key(key)
                     .build());
         } catch (S3Exception e) {
@@ -376,7 +364,7 @@ public void deletePdf(String urlToDelete) {
     public ResponseInputStream<GetObjectResponse> getPdf(String pdfUrl) {
         String key = extractKeyFromUrl(pdfUrl);
         GetObjectRequest getObjectRequest = GetObjectRequest.builder()
-                .bucket(bucketName)
+                .bucket(s3Properties.getS3BucketName())
                 .key(key)
                 .build();
         return s3Client.getObject(getObjectRequest);
@@ -399,7 +387,7 @@ private String extractKeyFromUrl(String url) {
     }
 
     private String getpdfUrl(String fileName) {
-        return bucketUrl + "/" + fileName;
+        return s3Properties.getS3BucketUrl() + "/" + fileName;
     }
 
     @PreDestroy
diff --git a/web3-credential-server/src/main/java/web3/common/dto/jwt/JwtResponse.java b/web3-credential-server/src/main/java/web3/service/dto/jwt/JwtResponse.java
similarity index 95%
rename from web3-credential-server/src/main/java/web3/common/dto/jwt/JwtResponse.java
rename to web3-credential-server/src/main/java/web3/service/dto/jwt/JwtResponse.java
index eef1123..ac2f66f 100644
--- a/web3-credential-server/src/main/java/web3/common/dto/jwt/JwtResponse.java
+++ b/web3-credential-server/src/main/java/web3/service/dto/jwt/JwtResponse.java
@@ -1,4 +1,4 @@
-package web3.common.dto.jwt;
+package web3.service.dto.jwt;
 
 public class JwtResponse {
     private String accessToken;
diff --git a/web3-credential-server/src/main/java/web3/common/dto/user/UserInfoDto.java b/web3-credential-server/src/main/java/web3/service/dto/user/UserInfoDto.java
similarity index 97%
rename from web3-credential-server/src/main/java/web3/common/dto/user/UserInfoDto.java
rename to web3-credential-server/src/main/java/web3/service/dto/user/UserInfoDto.java
index 140500d..cc3d640 100644
--- a/web3-credential-server/src/main/java/web3/common/dto/user/UserInfoDto.java
+++ b/web3-credential-server/src/main/java/web3/service/dto/user/UserInfoDto.java
@@ -1,4 +1,4 @@
-package web3.common.dto.user;
+package web3.service.dto.user;
 
 public class UserInfoDto {
     private long id;
diff --git a/web3-credential-server/src/main/java/web3/service/kakao/KakaoService.java b/web3-credential-server/src/main/java/web3/service/kakao/KakaoService.java
index ee1b3a1..588ed7a 100644
--- a/web3-credential-server/src/main/java/web3/service/kakao/KakaoService.java
+++ b/web3-credential-server/src/main/java/web3/service/kakao/KakaoService.java
@@ -12,9 +12,9 @@
 import org.springframework.web.client.RestClient;
 import org.springframework.web.client.RestClientException;
 import org.springframework.web.client.RestClientResponseException;
-import web3.properties.kakao.KakaoProperties;
+import web3.properties.KakaoProperties;
 import web3.domain.user.User;
-import web3.common.dto.user.UserInfoDto;
+import web3.service.dto.user.UserInfoDto;
 import web3.domain.wallet.Wallet;
 import web3.repository.wallet.WalletRepository;
 import web3.service.user.UserService;
diff --git a/web3-credential-server/src/main/resources/application.properties b/web3-credential-server/src/main/resources/application.properties
index 9fd291c..fd411bc 100644
--- a/web3-credential-server/src/main/resources/application.properties
+++ b/web3-credential-server/src/main/resources/application.properties
@@ -54,14 +54,13 @@ spring.mvc.cors.allowed-origin-patterns=http://localhost:8080
 spring.mvc.cors.allow-credentials=true
 
 # AWS S3 Service bucket
-cloud.aws.s3.bucket=
-cloud.aws.region.static=ap-northeast-2
-cloud.aws.credentials.accessKey=
-cloud.aws.credentials.secretKey=
-cloud.aws.stack.auto=false
-
+cloud.aws.s3-bucket-name=
 # AWS S3 Bucket URL
-cloud.aws.s3.bucket.url=
+cloud.aws.s3-bucket-url=
+cloud.aws.region-static=ap-northeast-2
+cloud.aws.credentials-accessKey=
+cloud.aws.credentials-secretKey=
+cloud.aws.stack.auto=false
 
 
 
diff --git a/web3-credential-server/src/test/java/web3/kakao/RestClientTest.java b/web3-credential-server/src/test/java/web3/kakao/RestClientTest.java
index a08f1c3..a64c3cb 100644
--- a/web3-credential-server/src/test/java/web3/kakao/RestClientTest.java
+++ b/web3-credential-server/src/test/java/web3/kakao/RestClientTest.java
@@ -15,7 +15,7 @@
 import org.springframework.test.web.client.MockRestServiceServer;
 import org.springframework.util.LinkedMultiValueMap;
 import org.springframework.web.client.RestTemplate;
-import web3.properties.kakao.KakaoProperties;
+import web3.properties.KakaoProperties;
 
 import java.util.HashMap;