diff --git a/src/main/java/aromanticcat/umcproject/converter/MyCollectionConverter.java b/src/main/java/aromanticcat/umcproject/converter/MyCollectionConverter.java
index 91b14ad..ec9aa8b 100644
--- a/src/main/java/aromanticcat/umcproject/converter/MyCollectionConverter.java
+++ b/src/main/java/aromanticcat/umcproject/converter/MyCollectionConverter.java
@@ -1,6 +1,8 @@
 package aromanticcat.umcproject.converter;
 
 import aromanticcat.umcproject.entity.AcquiredItem;
+import aromanticcat.umcproject.entity.MyLetterPaper;
+import aromanticcat.umcproject.entity.MyStamp;
 import aromanticcat.umcproject.web.dto.MyCollectionResponseDTO;
 
 public class MyCollectionConverter{
@@ -21,5 +23,22 @@ public static MyCollectionResponseDTO.AcquiredStampResultDTO toAcquiredStampResu
                 .acquiredAt(stamp.getCreatedAt())
                 .build();
     }
+    public static MyCollectionResponseDTO.AcquiredLetterPaperResultDTO toMyLetterPaperResultDTO(MyLetterPaper myLetterPaper){
+        return MyCollectionResponseDTO.AcquiredLetterPaperResultDTO.builder()
+                .letterPaperId(myLetterPaper.getMPaper_id())
+                .letterPaperName(myLetterPaper.getName())
+                .letterPaperImageUrl(myLetterPaper.getImageUrl())
+                .acquiredAt(myLetterPaper.getCreatedAt())
+                .build();
+    }
+    public static MyCollectionResponseDTO.AcquiredStampResultDTO toMyStampResultDTO(MyStamp stamp){
+        return MyCollectionResponseDTO.AcquiredStampResultDTO.builder()
+                .stampId(stamp.getMStamp_id())
+                .stampName(stamp.getName())
+                .stampImageUrl(stamp.getImageUrl())
+                .acquiredAt(stamp.getCreatedAt())
+                .build();
+    }
+
 
 }
diff --git a/src/main/java/aromanticcat/umcproject/entity/MyLetterPaper.java b/src/main/java/aromanticcat/umcproject/entity/MyLetterPaper.java
index 9f9bda0..3859b95 100644
--- a/src/main/java/aromanticcat/umcproject/entity/MyLetterPaper.java
+++ b/src/main/java/aromanticcat/umcproject/entity/MyLetterPaper.java
@@ -10,7 +10,7 @@
 @Setter
 @RequiredArgsConstructor
 @Table(name = "myLetterPaper")
-public class MyLetterPaper {
+public class MyLetterPaper extends BaseEntity{
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long mPaper_id;
diff --git a/src/main/java/aromanticcat/umcproject/entity/MyStamp.java b/src/main/java/aromanticcat/umcproject/entity/MyStamp.java
index b78c74e..03be569 100644
--- a/src/main/java/aromanticcat/umcproject/entity/MyStamp.java
+++ b/src/main/java/aromanticcat/umcproject/entity/MyStamp.java
@@ -14,7 +14,7 @@
 @Builder
 @RequiredArgsConstructor
 @Table(name = "myStamp")
-public class MyStamp {
+public class MyStamp extends BaseEntity{
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long mStamp_id;
diff --git a/src/main/java/aromanticcat/umcproject/repository/MyLetterPaperRepository.java b/src/main/java/aromanticcat/umcproject/repository/MyLetterPaperRepository.java
index 5c5f761..3af1943 100644
--- a/src/main/java/aromanticcat/umcproject/repository/MyLetterPaperRepository.java
+++ b/src/main/java/aromanticcat/umcproject/repository/MyLetterPaperRepository.java
@@ -1,8 +1,11 @@
 package aromanticcat.umcproject.repository;
 
-import aromanticcat.umcproject.entity.Letterbox;
 import aromanticcat.umcproject.entity.MyLetterPaper;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface MyLetterPaperRepository extends JpaRepository<MyLetterPaper, Long> {
+    Page<MyLetterPaper> findByMemberId(Long memberId, Pageable pageable);
+
 }
diff --git a/src/main/java/aromanticcat/umcproject/repository/MyStampRepository.java b/src/main/java/aromanticcat/umcproject/repository/MyStampRepository.java
index c779b51..2907306 100644
--- a/src/main/java/aromanticcat/umcproject/repository/MyStampRepository.java
+++ b/src/main/java/aromanticcat/umcproject/repository/MyStampRepository.java
@@ -1,8 +1,12 @@
 package aromanticcat.umcproject.repository;
 
-import aromanticcat.umcproject.entity.Letterbox;
 import aromanticcat.umcproject.entity.MyStamp;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface MyStampRepository extends JpaRepository<MyStamp, Long> {
+
+    Page<MyStamp> findByMemberId(Long memberId, Pageable pageable);
+
 }
diff --git a/src/main/java/aromanticcat/umcproject/service/MyCollectionServiceImpl.java b/src/main/java/aromanticcat/umcproject/service/MyCollectionServiceImpl.java
deleted file mode 100644
index e2dfd6d..0000000
--- a/src/main/java/aromanticcat/umcproject/service/MyCollectionServiceImpl.java
+++ /dev/null
@@ -1,59 +0,0 @@
-package aromanticcat.umcproject.service;
-
-import aromanticcat.umcproject.converter.MyCollectionConverter;
-import aromanticcat.umcproject.entity.AcquiredItem;
-import aromanticcat.umcproject.repository.AcquiredItemRepository;
-import aromanticcat.umcproject.web.dto.MyCollectionResponseDTO;
-import lombok.RequiredArgsConstructor;
-import org.springframework.data.domain.Page;
-import org.springframework.data.domain.PageRequest;
-import org.springframework.data.domain.Pageable;
-import org.springframework.stereotype.Service;
-
-import javax.transaction.Transactional;
-import java.util.List;
-import java.util.stream.Collectors;
-
-@Service
-@RequiredArgsConstructor
-@Transactional
-public class MyCollectionServiceImpl implements MyCollectionService {
-
-    private final AcquiredItemRepository acquiredItemRepository;
-
-    @Override
-    @Transactional
-    public List<MyCollectionResponseDTO.AcquiredLetterPaperResultDTO> findLetterPaperList(Long memberId, int page, int pageSize) {
-        Pageable pageable = PageRequest.of(page, pageSize);
-
-        // 사용자가 구매한 편지지 목록 조회
-        Page<AcquiredItem> acquiredLetterPaperPage = acquiredItemRepository.findByMemberIdAndLetterPaperIdIsNotNull(memberId, pageable);
-
-        List<AcquiredItem> acquiredLetterPaperList = acquiredLetterPaperPage.getContent();
-
-        List<MyCollectionResponseDTO.AcquiredLetterPaperResultDTO> responseDTOs = acquiredLetterPaperList.stream()
-                .map(letterPaper -> MyCollectionConverter.toAcquiredLetterPaperResultDTO(letterPaper))
-                .collect(Collectors.toList());
-        return responseDTOs;
-
-    }
-
-    @Override
-    @Transactional
-    public List<MyCollectionResponseDTO.AcquiredStampResultDTO> findStampList(Long memberId, int page, int pageSize) {
-        Pageable pageable = PageRequest.of(page, pageSize);
-
-        // 사용자가 구매한 우표 목록 조회
-        Page<AcquiredItem> acquiredStampPage = acquiredItemRepository.findByMemberIdAndStampIdIsNotNull(memberId, pageable);
-
-        List<AcquiredItem> acquiredStampList = acquiredStampPage.getContent();
-
-        List<MyCollectionResponseDTO.AcquiredStampResultDTO> responseDTOs = acquiredStampList.stream()
-                .map(stamp -> MyCollectionConverter.toAcquiredStampResultDTO(stamp))
-                .collect(Collectors.toList());
-        return responseDTOs;
-
-    }
-
-
-}
diff --git a/src/main/java/aromanticcat/umcproject/service/MyCollectionService.java b/src/main/java/aromanticcat/umcproject/service/myCollectionService/MyCollectionService.java
similarity index 54%
rename from src/main/java/aromanticcat/umcproject/service/MyCollectionService.java
rename to src/main/java/aromanticcat/umcproject/service/myCollectionService/MyCollectionService.java
index d4a5b25..1ed94e6 100644
--- a/src/main/java/aromanticcat/umcproject/service/MyCollectionService.java
+++ b/src/main/java/aromanticcat/umcproject/service/myCollectionService/MyCollectionService.java
@@ -1,4 +1,4 @@
-package aromanticcat.umcproject.service;
+package aromanticcat.umcproject.service.myCollectionService;
 
 import aromanticcat.umcproject.web.dto.MyCollectionResponseDTO;
 
@@ -6,7 +6,6 @@
 
 public interface MyCollectionService {
 
-    List<MyCollectionResponseDTO.AcquiredLetterPaperResultDTO>  findLetterPaperList(Long memberId, int page, int pageSize);
-    List<MyCollectionResponseDTO.AcquiredStampResultDTO>  findStampList(Long memberId, int page, int pageSize);
-
+    List<MyCollectionResponseDTO.AcquiredLetterPaperResultDTO>  findLetterPaperList(Long memberId, int page, int pageSize, boolean onlyMyDesign);
+    List<MyCollectionResponseDTO.AcquiredStampResultDTO>  findStampList(Long memberId, int page, int pageSize, boolean onlyMyDesign);
 }
diff --git a/src/main/java/aromanticcat/umcproject/service/myCollectionService/MyCollectionServiceImpl.java b/src/main/java/aromanticcat/umcproject/service/myCollectionService/MyCollectionServiceImpl.java
new file mode 100644
index 0000000..e4133e8
--- /dev/null
+++ b/src/main/java/aromanticcat/umcproject/service/myCollectionService/MyCollectionServiceImpl.java
@@ -0,0 +1,114 @@
+package aromanticcat.umcproject.service.myCollectionService;
+
+import aromanticcat.umcproject.converter.MyCollectionConverter;
+import aromanticcat.umcproject.entity.AcquiredItem;
+import aromanticcat.umcproject.entity.MyLetterPaper;
+import aromanticcat.umcproject.entity.MyStamp;
+import aromanticcat.umcproject.repository.AcquiredItemRepository;
+import aromanticcat.umcproject.repository.MyLetterPaperRepository;
+import aromanticcat.umcproject.repository.MyStampRepository;
+import aromanticcat.umcproject.web.dto.MyCollectionResponseDTO;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
+import org.springframework.stereotype.Service;
+
+import javax.transaction.Transactional;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Service
+@RequiredArgsConstructor
+@Transactional
+public class MyCollectionServiceImpl implements MyCollectionService {
+
+    private final AcquiredItemRepository acquiredItemRepository;
+    private final MyLetterPaperRepository myLetterPaperRepository;
+    private final MyStampRepository myStampRepository;
+
+    @Override
+    @Transactional
+    public List<MyCollectionResponseDTO.AcquiredLetterPaperResultDTO> findLetterPaperList(Long memberId, int page, int pageSize, boolean onlyMyDesign) {
+        Pageable pageable = PageRequest.of(page, pageSize);
+        List<MyCollectionResponseDTO.AcquiredLetterPaperResultDTO> responseDTOs;
+
+        if(onlyMyDesign) {
+            Page<MyLetterPaper> myLetterPaperPage = myLetterPaperRepository.findByMemberId(memberId, pageable);
+            List<MyLetterPaper> myLetterPaperList = myLetterPaperPage.getContent();
+
+            responseDTOs = myLetterPaperList.stream()
+                    .map(myLetterPaper -> MyCollectionConverter.toMyLetterPaperResultDTO(myLetterPaper))
+                    .collect(Collectors.toList());
+        }else {
+            // 사용자가 구매한 편지지 목록 조회
+            Page<AcquiredItem> acquiredLetterPaperPage = acquiredItemRepository.findByMemberIdAndLetterPaperIdIsNotNull(memberId, pageable);
+            List<AcquiredItem> acquiredLetterPaperList = acquiredLetterPaperPage.getContent();
+
+            // 마이 디자인 편지지 목록 조회
+            Page<MyLetterPaper> myLetterPaperPage = myLetterPaperRepository.findByMemberId(memberId, pageable);
+            List<MyLetterPaper> myLetterPaperList = myLetterPaperPage.getContent();
+
+            // MyLetterPaper와 AcquredItem에서 가져온 편지지 목록 병합
+            List<MyCollectionResponseDTO.AcquiredLetterPaperResultDTO> myLetterPaperDTOs = myLetterPaperList.stream()
+                    .map(myLetterPaper -> MyCollectionConverter.toMyLetterPaperResultDTO(myLetterPaper))
+                    .collect(Collectors.toList());
+
+            List<MyCollectionResponseDTO.AcquiredLetterPaperResultDTO> acquiredLetterPaperDTOs = acquiredLetterPaperList.stream()
+                    .map(letterPaper -> MyCollectionConverter.toAcquiredLetterPaperResultDTO(letterPaper))
+                    .collect(Collectors.toList());
+
+            responseDTOs = new ArrayList<>();
+            responseDTOs.addAll(myLetterPaperDTOs);
+            responseDTOs.addAll(acquiredLetterPaperDTOs);
+        }
+        return responseDTOs;
+
+    }
+
+    @Override
+    @Transactional
+    public List<MyCollectionResponseDTO.AcquiredStampResultDTO> findStampList(Long memberId, int page, int pageSize, boolean onlyMyDesign) {
+        Pageable pageable = PageRequest.of(page, pageSize);
+        List<MyCollectionResponseDTO.AcquiredStampResultDTO> responseDTOs;
+
+        if(onlyMyDesign){
+            Page<MyStamp> myStampPage = myStampRepository.findByMemberId(memberId, pageable);
+
+            List<MyStamp> myStampList = myStampPage.getContent();
+
+            responseDTOs = myStampList.stream()
+                    .map(myStamp -> MyCollectionConverter.toMyStampResultDTO(myStamp))
+                    .collect(Collectors.toList());
+        }else{
+            // 사용자가 구매한 우표 목록 조회
+            Page<AcquiredItem> acquiredStampPage = acquiredItemRepository.findByMemberIdAndStampIdIsNotNull(memberId, pageable);
+            List<AcquiredItem> acquiredStampList = acquiredStampPage.getContent();
+
+            // 마이 디자인 우표 목록 조회
+            Page<MyStamp> myStampPage = myStampRepository.findByMemberId(memberId, pageable);
+            List<MyStamp> myStampList = myStampPage.getContent();
+
+            // MyStamp와 AcquredItem에서 가져온 우표 목록 병합
+            List<MyCollectionResponseDTO.AcquiredStampResultDTO> myStampDTOs = myStampList.stream()
+                    .map(myStamp -> MyCollectionConverter.toMyStampResultDTO(myStamp))
+                    .collect(Collectors.toList());
+
+            List<MyCollectionResponseDTO.AcquiredStampResultDTO> acquiredStampDTOs = acquiredStampList.stream()
+                    .map(stamp -> MyCollectionConverter.toAcquiredStampResultDTO(stamp))
+                    .collect(Collectors.toList());
+
+            responseDTOs = new ArrayList<>();
+            responseDTOs.addAll(myStampDTOs);
+            responseDTOs.addAll(acquiredStampDTOs);
+        }
+
+        return responseDTOs;
+
+    }
+
+
+
+
+}
diff --git a/src/main/java/aromanticcat/umcproject/service/MyDesignService.java b/src/main/java/aromanticcat/umcproject/service/myCollectionService/MyDesignService.java
similarity index 95%
rename from src/main/java/aromanticcat/umcproject/service/MyDesignService.java
rename to src/main/java/aromanticcat/umcproject/service/myCollectionService/MyDesignService.java
index 6c600ac..2b9df67 100644
--- a/src/main/java/aromanticcat/umcproject/service/MyDesignService.java
+++ b/src/main/java/aromanticcat/umcproject/service/myCollectionService/MyDesignService.java
@@ -1,4 +1,4 @@
-package aromanticcat.umcproject.service;
+package aromanticcat.umcproject.service.myCollectionService;
 
 import aromanticcat.umcproject.S3.S3Service;
 import aromanticcat.umcproject.entity.Member;
@@ -7,7 +7,6 @@
 import aromanticcat.umcproject.repository.MemberRepository;
 import aromanticcat.umcproject.repository.MyLetterPaperRepository;
 import aromanticcat.umcproject.repository.MyStampRepository;
-import aromanticcat.umcproject.repository.StampRepository;
 import aromanticcat.umcproject.web.dto.MyDesignRequest;
 import lombok.RequiredArgsConstructor;
 import org.springframework.beans.factory.annotation.Autowired;
diff --git a/src/main/java/aromanticcat/umcproject/service/StoreService.java b/src/main/java/aromanticcat/umcproject/service/storeService/StoreService.java
similarity index 89%
rename from src/main/java/aromanticcat/umcproject/service/StoreService.java
rename to src/main/java/aromanticcat/umcproject/service/storeService/StoreService.java
index f87c304..97bab0a 100644
--- a/src/main/java/aromanticcat/umcproject/service/StoreService.java
+++ b/src/main/java/aromanticcat/umcproject/service/storeService/StoreService.java
@@ -1,4 +1,4 @@
-package aromanticcat.umcproject.service;
+package aromanticcat.umcproject.service.storeService;
 
 import aromanticcat.umcproject.web.dto.store.StoreResponseDTO;
 
diff --git a/src/main/java/aromanticcat/umcproject/service/StoreServiceImpl.java b/src/main/java/aromanticcat/umcproject/service/storeService/StoreServiceImpl.java
similarity index 99%
rename from src/main/java/aromanticcat/umcproject/service/StoreServiceImpl.java
rename to src/main/java/aromanticcat/umcproject/service/storeService/StoreServiceImpl.java
index 2eefde4..5c2abd7 100644
--- a/src/main/java/aromanticcat/umcproject/service/StoreServiceImpl.java
+++ b/src/main/java/aromanticcat/umcproject/service/storeService/StoreServiceImpl.java
@@ -1,4 +1,4 @@
-package aromanticcat.umcproject.service;
+package aromanticcat.umcproject.service.storeService;
 
 import aromanticcat.umcproject.converter.StoreConverter;
 import aromanticcat.umcproject.entity.AcquiredItem;
diff --git a/src/main/java/aromanticcat/umcproject/web/controller/MyCollectionController.java b/src/main/java/aromanticcat/umcproject/web/controller/MyCollectionController.java
index 3676e78..ac90f9c 100644
--- a/src/main/java/aromanticcat/umcproject/web/controller/MyCollectionController.java
+++ b/src/main/java/aromanticcat/umcproject/web/controller/MyCollectionController.java
@@ -1,7 +1,7 @@
 package aromanticcat.umcproject.web.controller;
 
 import aromanticcat.umcproject.apiPayload.ApiResponse;
-import aromanticcat.umcproject.service.MyCollectionService;
+import aromanticcat.umcproject.service.myCollectionService.MyCollectionService;
 import aromanticcat.umcproject.web.dto.MyCollectionResponseDTO;
 import io.swagger.v3.oas.annotations.Operation;
 import lombok.RequiredArgsConstructor;
@@ -25,12 +25,13 @@ public class MyCollectionController {
             description = "페이징을 포함합니다. query String으로 page(기본값 0)와 pageSize(기본값 12)를 주세요.")
     public ApiResponse<List<MyCollectionResponseDTO.AcquiredLetterPaperResultDTO>> getMyLetterPaperList(
             @RequestParam(defaultValue = "0") int page,
-            @RequestParam(defaultValue = "12") int pageSize) {
+            @RequestParam(defaultValue = "12") int pageSize,
+            @RequestParam(defaultValue = "false")boolean onlyMyDesign) {
         try {
             // 로그인한 사용자의 아이디를 가져오는 메서드
             Long userId = getCurrentUserId();
 
-            List<MyCollectionResponseDTO.AcquiredLetterPaperResultDTO> letterPaperList = myCollectionService.findLetterPaperList(userId, page, pageSize);
+            List<MyCollectionResponseDTO.AcquiredLetterPaperResultDTO> letterPaperList = myCollectionService.findLetterPaperList(userId, page, pageSize, onlyMyDesign);
 
             return ApiResponse.onSuccess(letterPaperList);
 
@@ -41,18 +42,19 @@ public ApiResponse<List<MyCollectionResponseDTO.AcquiredLetterPaperResultDTO>> g
 
     @GetMapping("/stamp")
     @Operation(summary = "내 수집함 우표 조회 API",
-            description = "페이징을 포함합니다. query String으로 page(기본값 0)와 pageSize(기본값 12)를 주세요.")
+            description = "페이징을 포함합니다. query String으로 page(기본값 0)와 pageSize(기본값 12), onlyMyDesign(기본값 false)를 주세요.")
     public ApiResponse<List<MyCollectionResponseDTO.AcquiredStampResultDTO>> getMyStampList(
             @RequestParam(defaultValue = "0") int page,
-            @RequestParam(defaultValue = "12") int pageSize) {
+            @RequestParam(defaultValue = "12") int pageSize,
+            @RequestParam(defaultValue = "false")boolean onlyMyDesign) {
         try {
             // 로그인한 사용자의 아이디를 가져오는 메서드
             Long userId = getCurrentUserId();
 
-            List<MyCollectionResponseDTO.AcquiredStampResultDTO> stampList = myCollectionService.findStampList(userId, page, pageSize);
-
+            List<MyCollectionResponseDTO.AcquiredStampResultDTO> stampList = myCollectionService.findStampList(userId, page, pageSize, onlyMyDesign);
             return ApiResponse.onSuccess(stampList);
 
+
         } catch (Exception e) {
             return ApiResponse.onFailure(HttpStatus.INTERNAL_SERVER_ERROR.toString(), e.getMessage(), null);
         }
diff --git a/src/main/java/aromanticcat/umcproject/web/controller/MyDesignController.java b/src/main/java/aromanticcat/umcproject/web/controller/MyDesignController.java
index 9eba7f7..240b13d 100644
--- a/src/main/java/aromanticcat/umcproject/web/controller/MyDesignController.java
+++ b/src/main/java/aromanticcat/umcproject/web/controller/MyDesignController.java
@@ -1,7 +1,7 @@
 package aromanticcat.umcproject.web.controller;
 
 import aromanticcat.umcproject.apiPayload.ApiResponse;
-import aromanticcat.umcproject.service.MyDesignService;
+import aromanticcat.umcproject.service.myCollectionService.MyDesignService;
 import aromanticcat.umcproject.web.dto.MyDesignRequest;
 import io.swagger.annotations.ApiOperation;
 import lombok.RequiredArgsConstructor;
diff --git a/src/main/java/aromanticcat/umcproject/web/controller/StoreController.java b/src/main/java/aromanticcat/umcproject/web/controller/StoreController.java
index 617dbee..e284205 100644
--- a/src/main/java/aromanticcat/umcproject/web/controller/StoreController.java
+++ b/src/main/java/aromanticcat/umcproject/web/controller/StoreController.java
@@ -1,7 +1,7 @@
 package aromanticcat.umcproject.web.controller;
 
 import aromanticcat.umcproject.apiPayload.ApiResponse;
-import aromanticcat.umcproject.service.StoreService;
+import aromanticcat.umcproject.service.storeService.StoreService;
 import aromanticcat.umcproject.web.dto.store.StoreResponseDTO;
 import io.swagger.v3.oas.annotations.Operation;
 import lombok.RequiredArgsConstructor;