diff --git a/src/main/java/page/clab/api/domain/activity/activitygroup/api/ActivityGroupMemberController.java b/src/main/java/page/clab/api/domain/activity/activitygroup/api/ActivityGroupMemberController.java
index 141d2bbd0..965623b55 100644
--- a/src/main/java/page/clab/api/domain/activity/activitygroup/api/ActivityGroupMemberController.java
+++ b/src/main/java/page/clab/api/domain/activity/activitygroup/api/ActivityGroupMemberController.java
@@ -19,6 +19,7 @@
 import page.clab.api.domain.activity.activitygroup.domain.ActivityGroupStatus;
 import page.clab.api.domain.activity.activitygroup.dto.param.GroupScheduleDto;
 import page.clab.api.domain.activity.activitygroup.dto.request.ApplyFormRequestDto;
+import page.clab.api.domain.activity.activitygroup.dto.response.ActivityGroupDetailResponseDto;
 import page.clab.api.domain.activity.activitygroup.dto.response.ActivityGroupResponseDto;
 import page.clab.api.domain.activity.activitygroup.dto.response.ActivityGroupStatusResponseDto;
 import page.clab.api.domain.activity.activitygroup.dto.response.GroupMemberResponseDto;
@@ -57,10 +58,10 @@ public ApiResponse<PagedResponseDto<ActivityGroupResponseDto>> getActivityGroups
     @Operation(summary = "[U] 활동 상세 조회", description = "ROLE_ANONYMOUS 이상의 권한이 필요함")
     @PreAuthorize("hasRole('USER')")
     @GetMapping("/{activityGroupId}")
-    public ApiResponse<Object> getActivityGroup(
+    public ApiResponse<ActivityGroupDetailResponseDto> getActivityGroup(
             @PathVariable(name = "activityGroupId") Long activityGroupId
     ) {
-        Object activityGroup = activityGroupMemberService.getActivityGroup(activityGroupId);
+        ActivityGroupDetailResponseDto activityGroup = activityGroupMemberService.getActivityGroup(activityGroupId);
         return ApiResponse.success(activityGroup);
     }
 
diff --git a/src/main/java/page/clab/api/domain/activity/activitygroup/application/ActivityGroupMemberService.java b/src/main/java/page/clab/api/domain/activity/activitygroup/application/ActivityGroupMemberService.java
index af334f5ff..7eaff27e9 100644
--- a/src/main/java/page/clab/api/domain/activity/activitygroup/application/ActivityGroupMemberService.java
+++ b/src/main/java/page/clab/api/domain/activity/activitygroup/application/ActivityGroupMemberService.java
@@ -24,10 +24,9 @@
 import page.clab.api.domain.activity.activitygroup.dto.param.GroupScheduleDto;
 import page.clab.api.domain.activity.activitygroup.dto.request.ApplyFormRequestDto;
 import page.clab.api.domain.activity.activitygroup.dto.response.ActivityGroupBoardResponseDto;
-import page.clab.api.domain.activity.activitygroup.dto.response.ActivityGroupProjectResponseDto;
+import page.clab.api.domain.activity.activitygroup.dto.response.ActivityGroupDetailResponseDto;
 import page.clab.api.domain.activity.activitygroup.dto.response.ActivityGroupResponseDto;
 import page.clab.api.domain.activity.activitygroup.dto.response.ActivityGroupStatusResponseDto;
-import page.clab.api.domain.activity.activitygroup.dto.response.ActivityGroupStudyResponseDto;
 import page.clab.api.domain.activity.activitygroup.dto.response.GroupMemberResponseDto;
 import page.clab.api.domain.activity.activitygroup.exception.AlreadyAppliedException;
 import page.clab.api.domain.activity.activitygroup.exception.InvalidCategoryException;
@@ -60,7 +59,7 @@ public PagedResponseDto<ActivityGroupResponseDto> getActivityGroups(Pageable pag
     }
 
     @Transactional(readOnly = true)
-    public Object getActivityGroup(Long activityGroupId) {
+    public ActivityGroupDetailResponseDto getActivityGroup(Long activityGroupId) {
         ActivityGroupDetails details = activityGroupDetailsRepository.fetchActivityGroupDetails(activityGroupId);
         Member currentMember = externalRetrieveMemberUseCase.getCurrentMember();
 
@@ -71,7 +70,7 @@ public Object getActivityGroup(Long activityGroupId) {
                 .map(groupMember -> GroupMemberResponseDto.toDto(externalRetrieveMemberUseCase.findByIdOrThrow(groupMember.getMemberId()), groupMember))
                 .toList();
 
-        List<ActivityGroupBoardResponseDto> activityGroupResponseDtos =
+        List<ActivityGroupBoardResponseDto> activityGroupBoardResponseDtos =
                 details.getActivityGroupBoards().stream()
                         .map(board -> {
                             MemberBasicInfoDto memberBasicInfoDto = externalRetrieveMemberUseCase.getCurrentMemberBasicInfo();
@@ -79,13 +78,7 @@ public Object getActivityGroup(Long activityGroupId) {
                         })
                         .toList();
 
-        if (details.getActivityGroup().isStudy()) {
-            return ActivityGroupStudyResponseDto.create(details.getActivityGroup(), details.getGroupMembers(), activityGroupResponseDtos, groupMemberResponseDtos, isOwner);
-        } else if (details.getActivityGroup().isProject()) {
-            return ActivityGroupProjectResponseDto.create(details.getActivityGroup(), details.getGroupMembers(), activityGroupResponseDtos, groupMemberResponseDtos, isOwner);
-        } else {
-            throw new InvalidCategoryException("해당 카테고리가 존재하지 않습니다.");
-        }
+        return ActivityGroupDetailResponseDto.create(details.getActivityGroup(), activityGroupBoardResponseDtos, groupMemberResponseDtos, isOwner);
     }
 
     @Transactional(readOnly = true)
diff --git a/src/main/java/page/clab/api/domain/activity/activitygroup/dto/response/ActivityGroupProjectResponseDto.java b/src/main/java/page/clab/api/domain/activity/activitygroup/dto/response/ActivityGroupDetailResponseDto.java
similarity index 85%
rename from src/main/java/page/clab/api/domain/activity/activitygroup/dto/response/ActivityGroupProjectResponseDto.java
rename to src/main/java/page/clab/api/domain/activity/activitygroup/dto/response/ActivityGroupDetailResponseDto.java
index 6d9f72cf4..557c187e3 100644
--- a/src/main/java/page/clab/api/domain/activity/activitygroup/dto/response/ActivityGroupProjectResponseDto.java
+++ b/src/main/java/page/clab/api/domain/activity/activitygroup/dto/response/ActivityGroupDetailResponseDto.java
@@ -1,21 +1,19 @@
 package page.clab.api.domain.activity.activitygroup.dto.response;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.util.List;
 import lombok.Builder;
 import lombok.Getter;
 import page.clab.api.domain.activity.activitygroup.domain.ActivityGroup;
-import page.clab.api.domain.activity.activitygroup.domain.ActivityGroupBoard;
 import page.clab.api.domain.activity.activitygroup.domain.ActivityGroupCategory;
 import page.clab.api.domain.activity.activitygroup.domain.ActivityGroupStatus;
 import page.clab.api.domain.activity.activitygroup.domain.GroupMember;
 
-import java.time.LocalDate;
-import java.time.LocalDateTime;
-import java.util.List;
-
 @Getter
 @Builder
-public class ActivityGroupProjectResponseDto {
+public class ActivityGroupDetailResponseDto {
 
     private Long id;
     private ActivityGroupCategory category;
@@ -23,7 +21,9 @@ public class ActivityGroupProjectResponseDto {
     private String name;
     private String content;
     private ActivityGroupStatus status;
+    private Long progress;
     private String imageUrl;
+    private String curriculum;
     private List<GroupMemberResponseDto> groupMembers;
     private LocalDate startDate;
     private LocalDate endDate;
@@ -35,16 +35,18 @@ public class ActivityGroupProjectResponseDto {
     private boolean isOwner;
     private LocalDateTime createdAt;
 
-    public static ActivityGroupProjectResponseDto create(ActivityGroup activityGroup, List<GroupMember> groupMembers,
+    public static ActivityGroupDetailResponseDto create(ActivityGroup activityGroup,
                                                          List<ActivityGroupBoardResponseDto> boards, List<GroupMemberResponseDto> groupMemberResponseDtos, boolean isOwner) {
-        return ActivityGroupProjectResponseDto.builder()
+        return ActivityGroupDetailResponseDto.builder()
                 .id(activityGroup.getId())
                 .category(activityGroup.getCategory())
                 .subject(activityGroup.getSubject())
                 .name(activityGroup.getName())
                 .content(activityGroup.getContent())
                 .status(activityGroup.getStatus())
+                .progress(activityGroup.getProgress())
                 .imageUrl(activityGroup.getImageUrl())
+                .curriculum(activityGroup.getCurriculum())
                 .groupMembers(groupMemberResponseDtos)
                 .startDate(activityGroup.getStartDate())
                 .endDate(activityGroup.getEndDate())
diff --git a/src/main/java/page/clab/api/domain/activity/activitygroup/dto/response/ActivityGroupStudyResponseDto.java b/src/main/java/page/clab/api/domain/activity/activitygroup/dto/response/ActivityGroupStudyResponseDto.java
deleted file mode 100644
index 462d6200a..000000000
--- a/src/main/java/page/clab/api/domain/activity/activitygroup/dto/response/ActivityGroupStudyResponseDto.java
+++ /dev/null
@@ -1,51 +0,0 @@
-package page.clab.api.domain.activity.activitygroup.dto.response;
-
-import com.fasterxml.jackson.annotation.JsonProperty;
-import lombok.Builder;
-import lombok.Getter;
-import page.clab.api.domain.activity.activitygroup.domain.ActivityGroup;
-import page.clab.api.domain.activity.activitygroup.domain.ActivityGroupBoard;
-import page.clab.api.domain.activity.activitygroup.domain.ActivityGroupCategory;
-import page.clab.api.domain.activity.activitygroup.domain.ActivityGroupStatus;
-import page.clab.api.domain.activity.activitygroup.domain.GroupMember;
-
-import java.time.LocalDateTime;
-import java.util.List;
-
-@Getter
-@Builder
-public class ActivityGroupStudyResponseDto {
-
-    private Long id;
-    private ActivityGroupCategory category;
-    private String subject;
-    private String name;
-    private String content;
-    private ActivityGroupStatus status;
-    private String imageUrl;
-    private List<GroupMemberResponseDto> groupMembers;
-    private String curriculum;
-    private List<ActivityGroupBoardResponseDto> activityGroupBoards;
-
-    @JsonProperty("isOwner")
-    private boolean isOwner;
-    private LocalDateTime createdAt;
-
-    public static ActivityGroupStudyResponseDto create(ActivityGroup activityGroup, List<GroupMember> groupMembers,
-                                                       List<ActivityGroupBoardResponseDto> boards, List<GroupMemberResponseDto> groupMemberResponseDtos, boolean isOwner) {
-        return ActivityGroupStudyResponseDto.builder()
-                .id(activityGroup.getId())
-                .category(activityGroup.getCategory())
-                .subject(activityGroup.getSubject())
-                .name(activityGroup.getName())
-                .content(activityGroup.getContent())
-                .status(activityGroup.getStatus())
-                .imageUrl(activityGroup.getImageUrl())
-                .groupMembers(groupMemberResponseDtos)
-                .curriculum(activityGroup.getCurriculum())
-                .activityGroupBoards(boards)
-                .isOwner(isOwner)
-                .createdAt(activityGroup.getCreatedAt())
-                .build();
-    }
-}