diff --git a/src/main/java/com/back/domain/notification/dto/NotificationItemDto.java b/src/main/java/com/back/domain/notification/dto/NotificationItemDto.java
index 1e54ae9d..7bd7d85e 100644
--- a/src/main/java/com/back/domain/notification/dto/NotificationItemDto.java
+++ b/src/main/java/com/back/domain/notification/dto/NotificationItemDto.java
@@ -2,6 +2,7 @@
 
 import com.back.domain.notification.entity.Notification;
 import com.back.domain.notification.enums.NotificationType;
+import com.back.domain.post.post.entity.PostImage;
 import java.time.LocalDateTime;
 import lombok.Builder;
 import lombok.Getter;
@@ -13,18 +14,29 @@ public class NotificationItemDto {
     private NotificationType type;
     private Long postId;
     private String postTitle;
+    private String postCategoryName;
+    private String postThumbnailUrl;
+    private String message;
     private boolean read;
     private LocalDateTime createdAt;
 
     public static NotificationItemDto from(Notification n) {
+        String categoryName = n.getPost().getCategory() != null ? n.getPost().getCategory().getName() : null;
+        String thumbnailUrl = n.getPost().getImages().stream()
+                .map(PostImage::getUrl)
+                .findFirst()
+                .orElse(null);
+
         return NotificationItemDto.builder()
                 .id(n.getId())
                 .type(n.getType())
                 .postId(n.getPost().getId())
                 .postTitle(n.getPost().getTitle())
+                .postCategoryName(categoryName)
+                .postThumbnailUrl(thumbnailUrl)
+                .message(n.getMessage())
                 .read(n.isRead())
                 .createdAt(n.getCreatedAt())
                 .build();
     }
 }
-
diff --git a/src/main/java/com/back/domain/post/comment/service/CommentService.java b/src/main/java/com/back/domain/post/comment/service/CommentService.java
index 1d0aaca6..adf191e7 100644
--- a/src/main/java/com/back/domain/post/comment/service/CommentService.java
+++ b/src/main/java/com/back/domain/post/comment/service/CommentService.java
@@ -47,11 +47,12 @@ public CommentResponseDto createComment(Long postId, CommentCreateRequestDto req
         .build();
 
     // 게시글 작성자에게 알림 전송
+    String commentMessage = String.format("%s 님이 '%s' 게시글에 댓글을 남겼습니다.", user.getNickname(), post.getTitle());
     notificationService.sendNotification(
         post.getUser(),
         post,
         NotificationType.COMMENT,
-        user.getNickname() + " 님이 댓글을 남겼습니다."
+        commentMessage
     );
 
     Comment saved = commentRepository.save(comment);
diff --git a/src/main/java/com/back/domain/post/post/service/PostService.java b/src/main/java/com/back/domain/post/post/service/PostService.java
index 59e8d366..0b7a7a4e 100644
--- a/src/main/java/com/back/domain/post/post/service/PostService.java
+++ b/src/main/java/com/back/domain/post/post/service/PostService.java
@@ -24,13 +24,6 @@
 import com.back.global.file.dto.UploadedFileDto;
 import com.back.global.file.service.FileService;
 import com.back.global.rq.Rq;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.NoSuchElementException;
-import java.util.Optional;
-import java.util.function.Function;
-import java.util.stream.Collectors;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -38,6 +31,10 @@
 import org.springframework.transaction.support.TransactionSynchronizationManager;
 import org.springframework.web.multipart.MultipartFile;
 
+import java.util.*;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+
 @Service
 @RequiredArgsConstructor
 public class PostService {
@@ -264,11 +261,12 @@ public PostLikeResponseDto toggleLike(Long postId) {
       abvScoreService.awardForLike(user.getId());
 
       // 게시글 작성자에게 알림 전송
+      String likeMessage = String.format("%s 님이 '%s' 게시글에 추천을 남겼습니다.", user.getNickname(), post.getTitle());
       notificationService.sendNotification(
           post.getUser(),
           post,
           NotificationType.LIKE,
-          user.getNickname() + " 님이 추천을 남겼습니다."
+          likeMessage
       );
 
       return new PostLikeResponseDto(postLike.getStatus());
diff --git a/src/test/java/com/back/domain/notification/controller/NotificationControllerTest.java b/src/test/java/com/back/domain/notification/controller/NotificationControllerTest.java
index 98aa5ef1..bf7bf050 100644
--- a/src/test/java/com/back/domain/notification/controller/NotificationControllerTest.java
+++ b/src/test/java/com/back/domain/notification/controller/NotificationControllerTest.java
@@ -129,6 +129,9 @@ void getNotifications_noCursor() throws Exception {
                 .type(NotificationType.COMMENT)
                 .postId(55L)
                 .postTitle("새 댓글")
+                .postCategoryName("공지")
+                .postThumbnailUrl("https://example.com/thumb.png")
+                .message("새 댓글이 달렸습니다.")
                 .read(false)
                 .createdAt(LocalDateTime.of(2025, 1, 2, 12, 0))
                 .build();
@@ -154,6 +157,9 @@ void getNotifications_noCursor() throws Exception {
                 .andExpect(jsonPath("$.code").value(200))
                 .andExpect(jsonPath("$.message").value("success"))
                 .andExpect(jsonPath("$.data.items[0].id").value(101))
+                .andExpect(jsonPath("$.data.items[0].postCategoryName").value("공지"))
+                .andExpect(jsonPath("$.data.items[0].postThumbnailUrl").value("https://example.com/thumb.png"))
+                .andExpect(jsonPath("$.data.items[0].message").value("새 댓글이 달렸습니다."))
                 .andExpect(jsonPath("$.data.hasNext").value(false))
                 .andExpect(jsonPath("$.data.nextCreatedAt").doesNotExist());