diff --git a/src/main/java/com/archisemtle/semtlewebserverspring/application/activity/ActivityServiceImpl.java b/src/main/java/com/archisemtle/semtlewebserverspring/application/activity/ActivityServiceImpl.java
index b402e5a..84dbd25 100644
--- a/src/main/java/com/archisemtle/semtlewebserverspring/application/activity/ActivityServiceImpl.java
+++ b/src/main/java/com/archisemtle/semtlewebserverspring/application/activity/ActivityServiceImpl.java
@@ -12,6 +12,7 @@
 import jakarta.transaction.Transactional;
 import jakarta.validation.constraints.Null;
 import java.io.IOException;
+import java.time.LocalDateTime;
 import java.util.Date;
 import lombok.AllArgsConstructor;
 import org.slf4j.Logger;
@@ -39,7 +40,7 @@ public void createActivityBoard(ActivityRequestDto requestDto) throws IOExceptio
             .writer(requestDto.getWriter())
             .images(requestDto.getImages())
             .uuid(requestDto.getUuid())
-            .createdAt(new Date())
+            .createdAt(java.time.LocalDateTime.now())
             .type(requestDto.getType())
             .build();
 
@@ -67,7 +68,7 @@ public void updateActivityBoard(Long id, ActivityRequestDto requestDto){
                 .title(requestDto.getTitle())
                 .content(requestDto.getContent())
                 .writer(requestDto.getWriter())
-                .createdAt(requestDto.getCreatedAt())
+                .createdAt(LocalDateTime.now())
                 .uuid(activity.getUuid())
                 .images(requestDto.getImages())
                 .type(requestDto.getType())
diff --git a/src/main/java/com/archisemtle/semtlewebserverspring/application/archive/ArchiveServiceImpl.java b/src/main/java/com/archisemtle/semtlewebserverspring/application/archive/ArchiveServiceImpl.java
index 838fee5..4ff08d0 100644
--- a/src/main/java/com/archisemtle/semtlewebserverspring/application/archive/ArchiveServiceImpl.java
+++ b/src/main/java/com/archisemtle/semtlewebserverspring/application/archive/ArchiveServiceImpl.java
@@ -9,6 +9,7 @@
 import com.archisemtle.semtlewebserverspring.dto.archive.ArchiveRequestDto;
 import com.archisemtle.semtlewebserverspring.dto.archive.ArchiveResponseDto;
 import com.archisemtle.semtlewebserverspring.infrastructure.archive.ArchiveRepository;
+import java.time.LocalDateTime;
 import java.util.Date;
 import java.util.UUID;
 import lombok.AllArgsConstructor;
@@ -34,7 +35,7 @@ public void createArchiveBoard(ArchiveRequestDto requestDto) {
             .title(requestDto.getTitle())
             .content(requestDto.getContent())
             .writer(requestDto.getWriter())
-            .createdAt(new Date())
+            .createdAt(LocalDateTime.now())
             .uuid(requestDto.getUuid())
             .imageUrl(requestDto.getImageUrl())
             .fileUrl(requestDto.getFileUrl())
diff --git a/src/main/java/com/archisemtle/semtlewebserverspring/common/BaseTimeEntity.java b/src/main/java/com/archisemtle/semtlewebserverspring/common/BaseTimeEntity.java
index efec6cb..c934600 100644
--- a/src/main/java/com/archisemtle/semtlewebserverspring/common/BaseTimeEntity.java
+++ b/src/main/java/com/archisemtle/semtlewebserverspring/common/BaseTimeEntity.java
@@ -18,6 +18,7 @@ public abstract class BaseTimeEntity {
     @Column(updatable = false)
     private LocalDateTime createAt;
 
+    @CreatedDate
     @LastModifiedDate
     private LocalDateTime updateAt;
 }
diff --git a/src/main/java/com/archisemtle/semtlewebserverspring/common/JpaAuditingConfig.java b/src/main/java/com/archisemtle/semtlewebserverspring/common/JpaAuditingConfig.java
new file mode 100644
index 0000000..d3f356c
--- /dev/null
+++ b/src/main/java/com/archisemtle/semtlewebserverspring/common/JpaAuditingConfig.java
@@ -0,0 +1,10 @@
+package com.archisemtle.semtlewebserverspring.common;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
+
+@Configuration
+@EnableJpaAuditing
+public class JpaAuditingConfig {
+
+}
diff --git a/src/main/java/com/archisemtle/semtlewebserverspring/config/CorsConfig.java b/src/main/java/com/archisemtle/semtlewebserverspring/config/CorsConfig.java
index 7f4ea81..04a9807 100644
--- a/src/main/java/com/archisemtle/semtlewebserverspring/config/CorsConfig.java
+++ b/src/main/java/com/archisemtle/semtlewebserverspring/config/CorsConfig.java
@@ -23,3 +23,6 @@ public void addCorsMappings(CorsRegistry registry) {
 
 }
 
+
+
+
diff --git a/src/main/java/com/archisemtle/semtlewebserverspring/domain/activity/Activity.java b/src/main/java/com/archisemtle/semtlewebserverspring/domain/activity/Activity.java
index d0f99d4..9234676 100644
--- a/src/main/java/com/archisemtle/semtlewebserverspring/domain/activity/Activity.java
+++ b/src/main/java/com/archisemtle/semtlewebserverspring/domain/activity/Activity.java
@@ -2,6 +2,7 @@
 
 import com.archisemtle.semtlewebserverspring.dto.activity.ActivityRequestDto;
 import com.archisemtle.semtlewebserverspring.vo.activity.ActivityResponseVo;
+import java.time.LocalDateTime;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.UUID;
@@ -23,14 +24,13 @@ public class Activity {
 
     @Column(nullable = false, unique = false)
     private String title;
-    @Column(nullable = false, unique = false)
+    @Column(nullable = false, unique = false,columnDefinition = "Text")
     private String content;
     @Column(nullable = false, unique = false)
     private String writer;
-    @Column(nullable = true, unique = false)
-    @Temporal(TemporalType.DATE)
-    private Date createdAt;
-    @Column(nullable = true, unique = false, columnDefinition = "uuid")
+    @Column(nullable = false, unique = false)
+    private LocalDateTime createdAt;
+    @Column(nullable = false, unique = false, columnDefinition = "uuid")
     private UUID uuid;
     @ElementCollection
     @CollectionTable(name = "activity_image", joinColumns = @JoinColumn(name = "activity_id"))
diff --git a/src/main/java/com/archisemtle/semtlewebserverspring/domain/archive/Archive.java b/src/main/java/com/archisemtle/semtlewebserverspring/domain/archive/Archive.java
index afbfe37..fa05cc2 100644
--- a/src/main/java/com/archisemtle/semtlewebserverspring/domain/archive/Archive.java
+++ b/src/main/java/com/archisemtle/semtlewebserverspring/domain/archive/Archive.java
@@ -1,23 +1,26 @@
 package com.archisemtle.semtlewebserverspring.domain.archive;
 
-import com.archisemtle.semtlewebserverspring.dto.archive.ArchiveRequestDto;
-import com.archisemtle.semtlewebserverspring.dto.archive.ArchiveResponseDto;
+
 import com.archisemtle.semtlewebserverspring.vo.archive.ArchiveResponseVo;
 import jakarta.persistence.Column;
 import jakarta.persistence.Entity;
 import jakarta.persistence.GeneratedValue;
 import jakarta.persistence.GenerationType;
 import jakarta.persistence.Id;
-import java.util.Date;
+import jakarta.persistence.Lob;
+import java.time.LocalDateTime;
 import java.util.List;
 import java.util.UUID;
+import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 
 @Getter
 @Entity(name = "archive")
+@AllArgsConstructor
 @NoArgsConstructor
+@Builder
 public class Archive {
 
     @Id
@@ -27,31 +30,21 @@ public class Archive {
 
     @Column(unique = false, nullable = false)
     private String title;
+    @Column(unique = false, nullable = false)
     private String writer;
+    @Column(nullable = false, unique = false,columnDefinition = "Text")
     private String content;
-    private Date createdAt;
+    @Column(unique = false, nullable = false)
+    private LocalDateTime createdAt;
 
     @Column(unique = false, nullable = false)
     private UUID uuid;
 
     @Column(unique = false, nullable = true)
     private List<String> imageUrl;
+    @Column(unique = false, nullable = true)
     private List<String> fileUrl;
 
-    @Builder
-    public Archive(Long id, String title, String writer, String content, Date createdAt, UUID uuid,
-        List<String> imageUrl, List<String> fileUrl)
-    {
-        this.id = id;
-        this.title = title;
-        this.writer = writer;
-        this.content = content;
-        this.createdAt = createdAt;
-        this.uuid = uuid;
-        this.imageUrl = imageUrl;
-        this.fileUrl =  fileUrl;
-    }
-
     public static ArchiveResponseVo entityToVo(Archive archive){
         return ArchiveResponseVo.builder()
             .writer(archive.getWriter())
diff --git a/src/main/java/com/archisemtle/semtlewebserverspring/dto/activity/ActivityResponseDto.java b/src/main/java/com/archisemtle/semtlewebserverspring/dto/activity/ActivityResponseDto.java
index 419dd80..b2da687 100644
--- a/src/main/java/com/archisemtle/semtlewebserverspring/dto/activity/ActivityResponseDto.java
+++ b/src/main/java/com/archisemtle/semtlewebserverspring/dto/activity/ActivityResponseDto.java
@@ -2,6 +2,7 @@
 
 import com.archisemtle.semtlewebserverspring.domain.activity.Activity;
 import com.archisemtle.semtlewebserverspring.vo.activity.ActivityResponseVo;
+import java.time.LocalDateTime;
 import java.util.Date;
 import java.util.List;
 import java.util.stream.Collectors;
@@ -16,7 +17,7 @@ public class ActivityResponseDto {
     private String title;
     private String content;
     private String writer;
-    private Date createdAt;
+    private LocalDateTime createdAt;
     private List<String> images;
     private String type;
 
diff --git a/src/main/java/com/archisemtle/semtlewebserverspring/dto/archive/ArchiveResponseDto.java b/src/main/java/com/archisemtle/semtlewebserverspring/dto/archive/ArchiveResponseDto.java
index 65e8b4a..2a88e5a 100644
--- a/src/main/java/com/archisemtle/semtlewebserverspring/dto/archive/ArchiveResponseDto.java
+++ b/src/main/java/com/archisemtle/semtlewebserverspring/dto/archive/ArchiveResponseDto.java
@@ -2,11 +2,13 @@
 
 import com.archisemtle.semtlewebserverspring.domain.archive.Archive;
 import com.archisemtle.semtlewebserverspring.vo.archive.ArchiveResponseVo;
+import java.time.LocalDateTime;
 import java.util.Date;
 import java.util.List;
 import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
+import org.springframework.cglib.core.Local;
 
 @Getter
 @NoArgsConstructor
@@ -16,7 +18,7 @@ public class ArchiveResponseDto {
     private String writer;
     private String content;
     private String title;
-    private Date createdAt;
+    private LocalDateTime createdAt;
     private List<String> imageUrl;
     private List<String> fileUrl;
 
diff --git a/src/main/java/com/archisemtle/semtlewebserverspring/infrastructure/ProjectBoardRepositoryImpl.java b/src/main/java/com/archisemtle/semtlewebserverspring/infrastructure/ProjectBoardRepositoryImpl.java
index b39c7e7..de3b093 100644
--- a/src/main/java/com/archisemtle/semtlewebserverspring/infrastructure/ProjectBoardRepositoryImpl.java
+++ b/src/main/java/com/archisemtle/semtlewebserverspring/infrastructure/ProjectBoardRepositoryImpl.java
@@ -13,13 +13,13 @@
 import com.querydsl.core.Tuple;
 import com.querydsl.core.types.dsl.BooleanExpression;
 import com.querydsl.core.types.dsl.CaseBuilder;
-import com.querydsl.core.types.dsl.Expressions;
+import com.querydsl.jpa.JPAExpressions;
 import com.querydsl.jpa.JPQLQuery;
 import com.querydsl.jpa.impl.JPAQueryFactory;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
-import java.util.Optional;
 import java.util.UUID;
 import java.util.stream.Collectors;
 import lombok.RequiredArgsConstructor;
@@ -41,18 +41,16 @@ public Page<ProjectBoardListDto> searchPageComplex(ProjectBoardSearchCondition c
         BooleanExpression projectTypeCondition = projectTypeCategoryNameEq(
             condition.getProjectTypeCategoryName());
 
-        List<Long> matchingProjectIds = queryFactory
-            .select(relationFieldProjectPostMiddle.projectBoard.id)
-            .from(relationFieldProjectPostMiddle)
-            .leftJoin(relationFieldCategory)
-            .on(relationFieldProjectPostMiddle.relationFieldCategory.id.eq(
-                relationFieldCategory.id))
-            .where(relationFieldCategoryNameEq(condition.getRelationFieldCategoryName()))
-            .fetch();
-
         BooleanExpression relationFieldCondition = null;
         if (hasText(condition.getRelationFieldCategoryName())) {
-            relationFieldCondition = projectBoard.id.in(matchingProjectIds); // ✅ 조회된 ID 목록을 조건으로 사용
+            relationFieldCondition = projectBoard.id.in(JPAExpressions
+                .select(relationFieldProjectPostMiddle.projectBoard.id)
+                .from(relationFieldProjectPostMiddle)
+                .leftJoin(relationFieldCategory)
+                .on(relationFieldProjectPostMiddle.relationFieldCategory.id.eq(
+                    relationFieldCategory.id))
+                .where(relationFieldCategoryNameEq(
+                    condition.getRelationFieldCategoryName()))); // ✅ 조회된 ID 목록을 조건으로 사용
         }
 
         BooleanExpression filterCondition =
@@ -88,18 +86,22 @@ public Page<ProjectBoardListDto> searchPageComplex(ProjectBoardSearchCondition c
                     .when(projectBoard.projectStatus.eq(ProjectStatus.IN_PROGRESS)).then(2)
                     .when(projectBoard.projectStatus.eq(ProjectStatus.CLOSED)).then(3)
                     .otherwise(4)
-                    .asc()
-            )
-            .orderBy(projectBoardImage.id.asc())
+                    .asc(),
+                projectBoard.updateAt.desc().nullsFirst(),
+                projectBoardImage.id.asc())
             .offset(pageable.getOffset())
             .limit(pageable.getPageSize())
             .fetch();
 
-        log.info("Query Result (Tuple List): {}", result); // ✅ 쿼리 결과 로그 출력
+//        log.info("Query Result (Tuple List): {}", result); // ✅ 쿼리 결과 로그 출력
 
         // DTO 변환 (List<String>으로 relationFieldCategoryName 합치기)
         Map<Long, List<Tuple>> groupedByProjectId = result.stream()
-            .collect(Collectors.groupingBy(tuple -> tuple.get(projectBoard.id)));
+            .collect(Collectors.groupingBy(tuple -> tuple.get(projectBoard.id),
+                LinkedHashMap::new,
+                Collectors.toList()));
+
+//        log.info("Grouped Result: {}", groupedByProjectId); // ✅ 그룹화된 결과 로그 출력
 
         List<ProjectBoardListDto> dtoList = groupedByProjectId.values().stream()
             .filter(grouped -> { // ✅ relation_type 필터링 추가 (게시물 유지 여부 결정)
@@ -155,7 +157,7 @@ public Page<ProjectBoardListDto> searchPageComplex(ProjectBoardSearchCondition c
 
         Page<ProjectBoardListDto> pageResult = PageableExecutionUtils.getPage(dtoList, pageable,
             countQuery::fetchOne);
-        log.info("Final Page Result: {}", pageResult); // ✅ 최종 반환값 로그 출력
+//        log.info("Final Page Result: {}", pageResult); // ✅ 최종 반환값 로그 출력
 
         return pageResult;
     }
@@ -188,7 +190,8 @@ public Page<ProjectBoardListDto> myProjectBoardPage(UUID uuid, Pageable pageable
                     .when(projectBoard.projectStatus.eq(ProjectStatus.IN_PROGRESS)).then(2)
                     .when(projectBoard.projectStatus.eq(ProjectStatus.CLOSED)).then(3)
                     .otherwise(4)
-                    .asc()
+                    .asc(),
+                projectBoard.updateAt.desc().nullsFirst()
             )
             .offset(pageable.getOffset())
             .limit(pageable.getPageSize())
@@ -196,7 +199,9 @@ public Page<ProjectBoardListDto> myProjectBoardPage(UUID uuid, Pageable pageable
 
         // DTO 변환 (List<String>으로 relationFieldCategoryName 합치기)
         Map<Long, List<Tuple>> groupedByProjectId = result.stream()
-            .collect(Collectors.groupingBy(tuple -> tuple.get(projectBoard.id)));
+            .collect(Collectors.groupingBy(tuple -> tuple.get(projectBoard.id),
+                LinkedHashMap::new,
+                Collectors.toList()));
 
         List<ProjectBoardListDto> dtoList = groupedByProjectId.values().stream()
             .map(grouped -> {
diff --git a/src/main/java/com/archisemtle/semtlewebserverspring/vo/activity/ActivityResponseVo.java b/src/main/java/com/archisemtle/semtlewebserverspring/vo/activity/ActivityResponseVo.java
index 0414091..120dd19 100644
--- a/src/main/java/com/archisemtle/semtlewebserverspring/vo/activity/ActivityResponseVo.java
+++ b/src/main/java/com/archisemtle/semtlewebserverspring/vo/activity/ActivityResponseVo.java
@@ -1,5 +1,6 @@
 package com.archisemtle.semtlewebserverspring.vo.activity;
 
+import java.time.LocalDateTime;
 import java.util.Date;
 import java.util.List;
 import lombok.Builder;
@@ -14,7 +15,7 @@ public class ActivityResponseVo {
     private String title;
     private String content;
     private String writer;
-    private Date createdAt;
+    private LocalDateTime createdAt;
     private List<String> images;
     private String type;
 
diff --git a/src/main/java/com/archisemtle/semtlewebserverspring/vo/archive/ArchiveResponseVo.java b/src/main/java/com/archisemtle/semtlewebserverspring/vo/archive/ArchiveResponseVo.java
index 507b93d..4371d41 100644
--- a/src/main/java/com/archisemtle/semtlewebserverspring/vo/archive/ArchiveResponseVo.java
+++ b/src/main/java/com/archisemtle/semtlewebserverspring/vo/archive/ArchiveResponseVo.java
@@ -1,5 +1,6 @@
 package com.archisemtle.semtlewebserverspring.vo.archive;
 
+import java.time.LocalDateTime;
 import java.util.Date;
 import java.util.List;
 import lombok.Builder;
@@ -13,7 +14,7 @@ public class ArchiveResponseVo {
     private String writer;
     private String content;
     private String title;
-    private Date createdAt;
+    private LocalDateTime createdAt;
     private List<String> imageUrl;
     private List<String> fileUrl;