diff --git a/src/main/java/com/petlog/auth/service/TokenService.java b/src/main/java/com/petlog/auth/service/TokenService.java
index b693adc..2edeaf1 100644
--- a/src/main/java/com/petlog/auth/service/TokenService.java
+++ b/src/main/java/com/petlog/auth/service/TokenService.java
@@ -4,7 +4,7 @@
 import com.petlog.auth.repository.RefreshTokenRepository;
 import com.petlog.common.config.jwt.TokenProvider;
 import com.petlog.member.entity.Member;
-import com.petlog.member.service.MemberService;
+import com.petlog.member.repository.MemberRepository;
 import lombok.RequiredArgsConstructor;
 import org.springframework.context.annotation.Profile;
 import org.springframework.stereotype.Service;
@@ -23,24 +23,32 @@ public class TokenService {
     private static final int ONE_MONTH_HOURS = 24 * 30;
 
     private final TokenProvider tokenProvider;
-    private final MemberService memberService;
     private final RefreshTokenRepository refreshTokenRepository;
+    private final MemberRepository memberRepository;
 
+    @Transactional(readOnly = true)
     @Profile("local")
     public String generateLocalAccessToken(final Long memberId) {
-        final Member member = memberService.getMember(memberId);
+        final Member member = getMember(memberId);
 
         return tokenProvider.generateAccessToken(member, Duration.ofHours(ONE_YEAR_HOURS));
     }
 
+    private Member getMember(final Long memberId) {
+        return memberRepository.findById(memberId)
+            .orElseThrow(() -> new IllegalArgumentException("존재하지 않는 회원입니다."));
+    }
+
+    @Transactional(readOnly = true)
     public String generateAccessToken(final Long memberId) {
-        final Member member = memberService.getMember(memberId);
+        final Member member = getMember(memberId);
 
         return tokenProvider.generateAccessToken(member, Duration.ofHours(ONE_HOUR));
     }
 
+    @Transactional
     public String generateRefreshToken(final Long memberId) {
-        final Member member = memberService.getMember(memberId);
+        final Member member = getMember(memberId);
 
         final String refreshToken = tokenProvider.generateRefreshToken(member, Duration.ofHours(ONE_MONTH_HOURS));
         refreshTokenRepository.save(new RefreshToken(member, refreshToken));
@@ -48,6 +56,7 @@ public String generateRefreshToken(final Long memberId) {
         return refreshToken;
     }
 
+    @Transactional(readOnly = true)
     public String reissueAccessToken(final String refreshToken) {
 
         if(!tokenProvider.validToken(refreshToken)) {
@@ -55,7 +64,7 @@ public String reissueAccessToken(final String refreshToken) {
         }
 
         final Long memberId = getRefreshToken(refreshToken).getMember().getId();
-        final Member member = memberService.getMember(memberId);
+        final Member member = getMember(memberId);
 
         return tokenProvider.generateAccessToken(member, Duration.ofHours(EXPIRED_AT_HOURS));
     }
diff --git a/src/main/java/com/petlog/docs/MemberControllerDocs.java b/src/main/java/com/petlog/docs/MemberControllerDocs.java
index f959e02..8cf0d42 100644
--- a/src/main/java/com/petlog/docs/MemberControllerDocs.java
+++ b/src/main/java/com/petlog/docs/MemberControllerDocs.java
@@ -1,5 +1,6 @@
 package com.petlog.docs;
 
+import com.petlog.auth.resolver.Authenticated;
 import com.petlog.member.controller.dto.request.UpdateIsNotificationEnabledRequestDto;
 import com.petlog.member.controller.dto.response.GetIsNotificationEnabledResponseDto;
 import io.swagger.v3.oas.annotations.Operation;
@@ -12,11 +13,11 @@ public interface MemberControllerDocs {
 
     @io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "200", description = "알림 수신 여부 조회에 성공하였습니다.")
     @Operation(summary = "알림 수신 여부 조회 API")
-    ResponseEntity<ApiResponse<GetIsNotificationEnabledResponseDto>> getIsNotificationEnabled();
+    ResponseEntity<ApiResponse<GetIsNotificationEnabledResponseDto>> getIsNotificationEnabled(@Authenticated final Long memberId);
 
     @io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "200", description = "알림 수신 여부 설정에 성공하였습니다.")
     @Operation(summary = "알림 수신 여부 설정 API")
-    ResponseEntity<ApiResponse<Void>> updateIsNotificationEnabled(final UpdateIsNotificationEnabledRequestDto request);
+    ResponseEntity<ApiResponse<Void>> updateIsNotificationEnabled(@Authenticated final Long memberId, final UpdateIsNotificationEnabledRequestDto request);
 
     @io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "200", description = "회원 탈퇴에 성공하였습니다.")
     @Operation(summary = "회원 탈퇴 API")
diff --git a/src/main/java/com/petlog/member/controller/MemberController.java b/src/main/java/com/petlog/member/controller/MemberController.java
index bb65ab4..d60cb4d 100644
--- a/src/main/java/com/petlog/member/controller/MemberController.java
+++ b/src/main/java/com/petlog/member/controller/MemberController.java
@@ -1,9 +1,11 @@
 package com.petlog.member.controller;
 
+import com.petlog.auth.resolver.Authenticated;
 import com.petlog.common.response.ApiResponse;
 import com.petlog.docs.MemberControllerDocs;
 import com.petlog.member.controller.dto.request.UpdateIsNotificationEnabledRequestDto;
 import com.petlog.member.controller.dto.response.GetIsNotificationEnabledResponseDto;
+import com.petlog.member.service.MemberService;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.DeleteMapping;
@@ -20,9 +22,14 @@
 @RestController
 public class MemberController implements MemberControllerDocs {
 
+    private final MemberService memberService;
+
     @GetMapping("/api/notification")
-    public ResponseEntity<ApiResponse<GetIsNotificationEnabledResponseDto>> getIsNotificationEnabled() {
-        final GetIsNotificationEnabledResponseDto response = new GetIsNotificationEnabledResponseDto(true);
+    public ResponseEntity<ApiResponse<GetIsNotificationEnabledResponseDto>> getIsNotificationEnabled(
+        @Authenticated final Long memberId
+    ) {
+        final boolean isNotificationEnabled = memberService.getIsNotificationEnabled(memberId);
+        final GetIsNotificationEnabledResponseDto response = new GetIsNotificationEnabledResponseDto(isNotificationEnabled);
 
         return ResponseEntity.ok(
             ApiResponse.successWithData(GET_IS_NOTIFICATION_ENABLED, response)
@@ -31,8 +38,11 @@ public ResponseEntity<ApiResponse<GetIsNotificationEnabledResponseDto>> getIsNot
 
     @PutMapping("/api/notification")
     public ResponseEntity<ApiResponse<Void>> updateIsNotificationEnabled(
+        @Authenticated final Long memberId,
         @RequestBody final UpdateIsNotificationEnabledRequestDto request
     ) {
+        memberService.updateIsNotificationEnabled(memberId, request.isNotificationEnabled());
+
         return ResponseEntity.ok(
             ApiResponse.success(UPDATE_IS_NOTIFICATION_ENABLED)
         );
diff --git a/src/main/java/com/petlog/member/entity/Member.java b/src/main/java/com/petlog/member/entity/Member.java
index af8ec59..3413719 100644
--- a/src/main/java/com/petlog/member/entity/Member.java
+++ b/src/main/java/com/petlog/member/entity/Member.java
@@ -43,4 +43,8 @@ public Member(
         this.isNotificationEnabled = true;
         this.providerId = providerId;
     }
+
+    public void updateIsNotificationEnabled(final boolean isNotificationEnabled) {
+        this.isNotificationEnabled = isNotificationEnabled;
+    }
 }
diff --git a/src/main/java/com/petlog/member/service/MemberService.java b/src/main/java/com/petlog/member/service/MemberService.java
index ed03b11..f6a0db0 100644
--- a/src/main/java/com/petlog/member/service/MemberService.java
+++ b/src/main/java/com/petlog/member/service/MemberService.java
@@ -5,6 +5,7 @@
 import com.petlog.member.service.dto.LoginDto;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 @RequiredArgsConstructor
 @Service
@@ -12,11 +13,7 @@ public class MemberService {
 
     private final MemberRepository memberRepository;
 
-    public Member getMember(final Long memberId) {
-        return memberRepository.findById(memberId)
-            .orElseThrow(() -> new IllegalArgumentException("존재하지 않는 memberId 입니다. memberId: " + memberId));
-    }
-
+    @Transactional
     public Member login(final LoginDto dto) {
         final Member member = memberRepository.findByProviderId(dto.providerId());
 
@@ -30,4 +27,22 @@ public Member login(final LoginDto dto) {
     private Member signUp(final String name, final String email, final String providerId) {
         return memberRepository.save(new Member(name, email, providerId));
     }
+
+    @Transactional(readOnly = true)
+    public boolean getIsNotificationEnabled(final Long memberId) {
+        final Member member = getMember(memberId);
+
+        return member.isNotificationEnabled();
+    }
+
+    private Member getMember(final Long memberId) {
+        return memberRepository.findById(memberId)
+            .orElseThrow(() -> new IllegalArgumentException("존재하지 않는 회원입니다."));
+    }
+
+    @Transactional
+    public void updateIsNotificationEnabled(final Long memberId, final boolean isNotificationEnabled) {
+        final Member member = getMember(memberId);
+        member.updateIsNotificationEnabled(isNotificationEnabled);
+    }
 }
diff --git a/src/main/java/com/petlog/pet/service/PetService.java b/src/main/java/com/petlog/pet/service/PetService.java
index 10be12d..273344a 100644
--- a/src/main/java/com/petlog/pet/service/PetService.java
+++ b/src/main/java/com/petlog/pet/service/PetService.java
@@ -178,6 +178,7 @@ public void createWateringRecord(final Long memberId, final Long groupId, final
         wateringDailyRecordRepository.save(record);
     }
 
+    @Transactional
     public void createPoopRecord(Long memberId, final Long groupId, final String memo) {
         final Member member = getMember(memberId);
         final PetGroup petGroup = getPetGroup(groupId);
diff --git a/src/main/java/com/petlog/s3/service/S3Service.java b/src/main/java/com/petlog/s3/service/S3Service.java
index c503ec4..6fe60ed 100644
--- a/src/main/java/com/petlog/s3/service/S3Service.java
+++ b/src/main/java/com/petlog/s3/service/S3Service.java
@@ -7,6 +7,7 @@
 import com.petlog.s3.service.dto.S3PresignedUrlItem;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 import java.util.List;
 import java.util.UUID;
@@ -18,6 +19,7 @@ public class S3Service {
     private final PresignedUrlGenerator presignedUrlGenerator;
     private final MemberRepository memberRepository;
 
+    @Transactional(readOnly = true)
     public GeneratedS3PresignedUrlDto generateS3PresignedUrl(final Long memberId, final FileType fileType, final List<String> fileNames) {
         getMember(memberId);
 
diff --git a/src/main/java/com/petlog/schedule/service/ScheduleService.java b/src/main/java/com/petlog/schedule/service/ScheduleService.java
index 7b82712..a6a1877 100644
--- a/src/main/java/com/petlog/schedule/service/ScheduleService.java
+++ b/src/main/java/com/petlog/schedule/service/ScheduleService.java
@@ -120,6 +120,7 @@ private void validateIsScheduleWriter(final Member member, final Schedule schedu
         }
     }
 
+    @Transactional
     public void deleteSchedule(final Long memberId, final Long groupId, final Long scheduleId) {
         final Member member = getMember(memberId);
         final PetGroup petGroup = getPetGroup(groupId);