diff --git a/src/main/java/daybyquest/post/application/GetPostService.java b/src/main/java/daybyquest/post/application/GetPostService.java
index a6654f3..8e427d5 100644
--- a/src/main/java/daybyquest/post/application/GetPostService.java
+++ b/src/main/java/daybyquest/post/application/GetPostService.java
@@ -1,8 +1,9 @@
 package daybyquest.post.application;
 
-import daybyquest.post.dto.response.PostResponse;
+import daybyquest.post.dto.response.PostWithQuestResponse;
 import daybyquest.post.query.PostDao;
 import daybyquest.post.query.PostData;
+import daybyquest.quest.domain.Quests;
 import daybyquest.user.query.Profile;
 import daybyquest.user.query.ProfileDao;
 import org.springframework.stereotype.Service;
@@ -15,15 +16,18 @@ public class GetPostService {
 
     private final ProfileDao profileDao;
 
-    public GetPostService(final PostDao postDao, final ProfileDao profileDao) {
+    private final Quests quests;
+
+    public GetPostService(final PostDao postDao, final ProfileDao profileDao, final Quests quests) {
         this.postDao = postDao;
         this.profileDao = profileDao;
+        this.quests = quests;
     }
 
     @Transactional(readOnly = true)
-    public PostResponse invoke(final Long loginId, final Long postId) {
+    public PostWithQuestResponse invoke(final Long loginId, final Long postId) {
         final PostData postData = postDao.getByPostId(loginId, postId);
         final Profile profile = profileDao.getById(loginId, postData.getUserId());
-        return PostResponse.of(postData, profile);
+        return PostWithQuestResponse.of(postData, profile);
     }
 }
diff --git a/src/main/java/daybyquest/post/domain/Post.java b/src/main/java/daybyquest/post/domain/Post.java
index 853c586..1277bf9 100644
--- a/src/main/java/daybyquest/post/domain/Post.java
+++ b/src/main/java/daybyquest/post/domain/Post.java
@@ -70,6 +70,9 @@ public Post(Long userId, Long questId, String content, List<Image> images) {
         validateUserId();
         validateImages();
         validateContent();
+        if (questId == null) {
+            success();
+        }
     }
 
     private void validateUserId() {
diff --git a/src/main/java/daybyquest/post/dto/response/PostWithQuestResponse.java b/src/main/java/daybyquest/post/dto/response/PostWithQuestResponse.java
new file mode 100644
index 0000000..334bc16
--- /dev/null
+++ b/src/main/java/daybyquest/post/dto/response/PostWithQuestResponse.java
@@ -0,0 +1,74 @@
+package daybyquest.post.dto.response;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.annotation.JsonFormat.Shape;
+import daybyquest.image.vo.Image;
+import daybyquest.post.domain.PostState;
+import daybyquest.post.query.PostData;
+import daybyquest.user.dto.response.ProfileResponse;
+import daybyquest.user.query.Profile;
+import java.time.LocalDateTime;
+import java.util.List;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+public class PostWithQuestResponse {
+
+    private ProfileResponse author;
+
+    private Long id;
+
+    private String content;
+
+    @JsonFormat(shape = Shape.STRING, pattern = "yyyy-MM-dd HH:mm")
+    private LocalDateTime updatedAt;
+
+    private boolean liked;
+
+    private List<String> imageIdentifiers;
+
+    private SimpleQuestResponse quest;
+
+    public PostWithQuestResponse(final ProfileResponse author, final Long id, final String content,
+            final LocalDateTime updatedAt, final boolean liked,
+            final List<String> imageIdentifiers, final SimpleQuestResponse quest) {
+        this.author = author;
+        this.id = id;
+        this.content = content;
+        this.updatedAt = updatedAt;
+        this.liked = liked;
+        this.imageIdentifiers = imageIdentifiers;
+        this.quest = quest;
+        if (quest.getQuestId() == null) {
+            this.quest = null;
+        }
+    }
+
+    public static PostWithQuestResponse of(final PostData postData, final Profile profile) {
+        return new PostWithQuestResponse(
+                ProfileResponse.of(profile),
+                postData.getId(), postData.getContent(), postData.getUpdatedAt(), postData.isLiked(),
+                postData.getImages().stream().map(Image::getImageIdentifier).toList(),
+                new SimpleQuestResponse(postData.getQuestId(), postData.getQuestTitle(), postData.getState())
+        );
+    }
+
+    @Getter
+    @NoArgsConstructor
+    private static class SimpleQuestResponse {
+
+        private Long questId;
+
+        private String title;
+
+        private PostState state;
+
+        public SimpleQuestResponse(final Long questId, final String title, final PostState state) {
+            this.questId = questId;
+            this.title = title;
+            this.state = state;
+        }
+    }
+}
diff --git a/src/main/java/daybyquest/post/presentation/PostCommandApi.java b/src/main/java/daybyquest/post/presentation/PostCommandApi.java
index a5c6874..3b5a674 100644
--- a/src/main/java/daybyquest/post/presentation/PostCommandApi.java
+++ b/src/main/java/daybyquest/post/presentation/PostCommandApi.java
@@ -8,7 +8,7 @@
 import daybyquest.post.application.SwipePostService;
 import daybyquest.post.dto.request.JudgePostRequest;
 import daybyquest.post.dto.request.SavePostRequest;
-import daybyquest.post.dto.response.PostResponse;
+import daybyquest.post.dto.response.PostWithQuestResponse;
 import java.util.List;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.PatchMapping;
@@ -40,11 +40,11 @@ public PostCommandApi(final SavePostService savePostService, final SwipePostServ
 
     @PostMapping("/post")
     @Authorization
-    public ResponseEntity<PostResponse> savePost(final AccessUser accessUser,
+    public ResponseEntity<PostWithQuestResponse> savePost(final AccessUser accessUser,
             @RequestPart SavePostRequest request,
             @RequestPart List<MultipartFile> files) {
         final Long postId = savePostService.invoke(accessUser.getId(), request, files);
-        final PostResponse response = getPostService.invoke(accessUser.getId(), postId);
+        final PostWithQuestResponse response = getPostService.invoke(accessUser.getId(), postId);
         return ResponseEntity.ok(response);
     }
 
diff --git a/src/main/java/daybyquest/post/presentation/PostQueryApi.java b/src/main/java/daybyquest/post/presentation/PostQueryApi.java
index ea1389d..40ee3cb 100644
--- a/src/main/java/daybyquest/post/presentation/PostQueryApi.java
+++ b/src/main/java/daybyquest/post/presentation/PostQueryApi.java
@@ -7,7 +7,7 @@
 import daybyquest.post.application.GetPostFromFollowingService;
 import daybyquest.post.application.GetPostService;
 import daybyquest.post.dto.response.PagePostsResponse;
-import daybyquest.post.dto.response.PostResponse;
+import daybyquest.post.dto.response.PostWithQuestResponse;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
@@ -32,9 +32,9 @@ public PostQueryApi(final GetPostService getPostService,
 
     @GetMapping("/post/{postId}")
     @Authorization
-    public ResponseEntity<PostResponse> getPost(final AccessUser accessUser,
+    public ResponseEntity<PostWithQuestResponse> getPost(final AccessUser accessUser,
             @PathVariable final Long postId) {
-        final PostResponse response = getPostService.invoke(accessUser.getId(), postId);
+        final PostWithQuestResponse response = getPostService.invoke(accessUser.getId(), postId);
         return ResponseEntity.ok(response);
     }
 
diff --git a/src/main/java/daybyquest/post/query/PostDaoQuerydslImpl.java b/src/main/java/daybyquest/post/query/PostDaoQuerydslImpl.java
index 40a7228..f428c3a 100644
--- a/src/main/java/daybyquest/post/query/PostDaoQuerydslImpl.java
+++ b/src/main/java/daybyquest/post/query/PostDaoQuerydslImpl.java
@@ -5,6 +5,7 @@
 import static daybyquest.image.vo.QImage.image;
 import static daybyquest.like.domain.QPostLike.postLike;
 import static daybyquest.post.domain.QPost.post;
+import static daybyquest.quest.domain.QQuest.quest;
 import static daybyquest.relation.domain.QFollow.follow;
 
 import com.querydsl.core.types.ConstructorExpression;
@@ -56,7 +57,12 @@ private ConstructorExpression<PostData> postDataProjection(final Long userId) {
                 post.updatedAt,
                 JPAExpressions.selectFrom(postLike)
                         .where(postLike.userId.eq(userId).and(postLike.postId.eq(post.id)))
-                        .exists());
+                        .exists(),
+                post.questId,
+                JPAExpressions.select(quest.title)
+                        .from(quest)
+                        .where(quest.id.eq(post.questId)),
+                post.state);
     }
 
     @Override
diff --git a/src/main/java/daybyquest/post/query/PostData.java b/src/main/java/daybyquest/post/query/PostData.java
index 8418b59..079e4cc 100644
--- a/src/main/java/daybyquest/post/query/PostData.java
+++ b/src/main/java/daybyquest/post/query/PostData.java
@@ -1,6 +1,7 @@
 package daybyquest.post.query;
 
 import daybyquest.image.vo.Image;
+import daybyquest.post.domain.PostState;
 import java.time.LocalDateTime;
 import java.util.List;
 import lombok.Getter;
@@ -20,13 +21,22 @@ public class PostData {
 
     private List<Image> images;
 
+    private final Long questId;
+
+    private final String questTitle;
+
+    private final PostState state;
+
     public PostData(final Long userId, final Long id, final String content, final LocalDateTime updatedAt,
-            final boolean liked) {
+            final boolean liked, final Long questId, final String questTitle, final PostState state) {
         this.userId = userId;
         this.id = id;
         this.content = content;
         this.updatedAt = updatedAt;
         this.liked = liked;
+        this.questId = questId;
+        this.questTitle = questTitle;
+        this.state = state;
     }
 
     public void setImages(final List<Image> images) {