diff --git a/backend/core/src/main/java/site/timecapsulearchive/core/domain/friend/api/query/FriendQueryApi.java b/backend/core/src/main/java/site/timecapsulearchive/core/domain/friend/api/query/FriendQueryApi.java
index 7fe063959..345a98c22 100644
--- a/backend/core/src/main/java/site/timecapsulearchive/core/domain/friend/api/query/FriendQueryApi.java
+++ b/backend/core/src/main/java/site/timecapsulearchive/core/domain/friend/api/query/FriendQueryApi.java
@@ -66,10 +66,10 @@ ResponseEntity<ApiSpec<FriendsSliceResponse>> findFriendsBeforeGroupInvite(
     @Operation(
         summary = "소셜 친구 요청 받은 목록 조회",
         description = """
-        사용자가 <b><u>소셜 친구 요청을 받은 목록</u></b>을 보여준다. 
-        <br>
-        수락 대기 중인 요청만 해당한다.
-        """,
+            사용자가 <b><u>소셜 친구 요청을 받은 목록</u></b>을 보여준다. 
+            <br>
+            수락 대기 중인 요청만 해당한다.
+            """,
         security = {@SecurityRequirement(name = "user_token")},
         tags = {"friend"}
     )
diff --git a/backend/core/src/main/java/site/timecapsulearchive/core/domain/friend/repository/member_friend/MemberFriendQueryRepository.java b/backend/core/src/main/java/site/timecapsulearchive/core/domain/friend/repository/member_friend/MemberFriendQueryRepository.java
index de7021d81..73a9bb6d4 100644
--- a/backend/core/src/main/java/site/timecapsulearchive/core/domain/friend/repository/member_friend/MemberFriendQueryRepository.java
+++ b/backend/core/src/main/java/site/timecapsulearchive/core/domain/friend/repository/member_friend/MemberFriendQueryRepository.java
@@ -30,7 +30,7 @@ Optional<SearchFriendSummaryDtoByTag> findFriendsByTag(
 
     List<Long> findFriendIdsByOwnerId(final Long memberId);
 
-    Slice<FriendSummaryDto> findFriendsBeforeGroupInvite(
+    Slice<FriendSummaryDto> findFriends(
         final FriendBeforeGroupInviteRequest request);
 
     List<Long> findFriendIds(final List<Long> groupMemberIds, final Long memberId);
diff --git a/backend/core/src/main/java/site/timecapsulearchive/core/domain/friend/repository/member_friend/MemberFriendQueryRepositoryImpl.java b/backend/core/src/main/java/site/timecapsulearchive/core/domain/friend/repository/member_friend/MemberFriendQueryRepositoryImpl.java
index 63cb8d93f..f4d70e495 100644
--- a/backend/core/src/main/java/site/timecapsulearchive/core/domain/friend/repository/member_friend/MemberFriendQueryRepositoryImpl.java
+++ b/backend/core/src/main/java/site/timecapsulearchive/core/domain/friend/repository/member_friend/MemberFriendQueryRepositoryImpl.java
@@ -1,10 +1,7 @@
 package site.timecapsulearchive.core.domain.friend.repository.member_friend;
 
-import static com.querydsl.jpa.JPAExpressions.select;
-import static site.timecapsulearchive.core.domain.friend.entity.QFriendInvite.friendInvite;
 import static site.timecapsulearchive.core.domain.friend.entity.QMemberFriend.memberFriend;
 import static site.timecapsulearchive.core.domain.member.entity.QMember.member;
-import static site.timecapsulearchive.core.domain.member_group.entity.QMemberGroup.memberGroup;
 
 import com.querydsl.core.types.OrderSpecifier;
 import com.querydsl.core.types.Projections;
@@ -73,8 +70,9 @@ private Slice<FriendSummaryDto> getFriendSummaryDtos(final int size,
         return new SliceImpl<>(friendSummaryDtos, Pageable.ofSize(size), hasNext);
     }
 
-    public Slice<FriendSummaryDto> findFriendsBeforeGroupInvite(
-        final FriendBeforeGroupInviteRequest request) {
+    public Slice<FriendSummaryDto> findFriends(
+        final FriendBeforeGroupInviteRequest request
+    ) {
         final List<FriendSummaryDto> friends = jpaQueryFactory
             .select(
                 Projections.constructor(
@@ -86,15 +84,8 @@ public Slice<FriendSummaryDto> findFriendsBeforeGroupInvite(
                 )
             )
             .from(memberFriend)
-            .innerJoin(member).on(memberFriend.owner.id.eq(member.id))
-            .innerJoin(member).on(memberFriend.friend.id.eq(member.id))
             .where(memberFriend.owner.id.eq(request.memberId())
                 .and(memberFriend.createdAt.lt(request.createdAt()))
-                .and(memberFriend.friend.id.notIn(
-                    select(memberGroup.member.id)
-                        .from(memberGroup)
-                        .where(memberGroup.group.id.eq(request.groupId()))
-                ))
             )
             .limit(request.size() + 1)
             .fetch();
diff --git a/backend/core/src/main/java/site/timecapsulearchive/core/domain/friend/service/query/FriendQueryService.java b/backend/core/src/main/java/site/timecapsulearchive/core/domain/friend/service/query/FriendQueryService.java
index 2e0ecc5e8..15e711f91 100644
--- a/backend/core/src/main/java/site/timecapsulearchive/core/domain/friend/service/query/FriendQueryService.java
+++ b/backend/core/src/main/java/site/timecapsulearchive/core/domain/friend/service/query/FriendQueryService.java
@@ -2,8 +2,10 @@
 
 import java.time.ZonedDateTime;
 import java.util.List;
+import java.util.stream.Stream;
 import lombok.RequiredArgsConstructor;
 import org.springframework.data.domain.Slice;
+import org.springframework.data.domain.SliceImpl;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import site.timecapsulearchive.core.domain.friend.data.dto.FriendSummaryDto;
@@ -13,6 +15,8 @@
 import site.timecapsulearchive.core.domain.friend.exception.FriendNotFoundException;
 import site.timecapsulearchive.core.domain.friend.repository.friend_invite.FriendInviteRepository;
 import site.timecapsulearchive.core.domain.friend.repository.member_friend.MemberFriendRepository;
+import site.timecapsulearchive.core.domain.member_group.repository.group_invite_repository.GroupInviteRepository;
+import site.timecapsulearchive.core.domain.member_group.repository.member_group_repository.MemberGroupRepository;
 import site.timecapsulearchive.core.global.common.wrapper.ByteArrayWrapper;
 
 @Service
@@ -21,6 +25,8 @@
 public class FriendQueryService {
 
     private final MemberFriendRepository memberFriendRepository;
+    private final MemberGroupRepository memberGroupRepository;
+    private final GroupInviteRepository groupInviteRepository;
     private final FriendInviteRepository friendInviteRepository;
 
     public Slice<FriendSummaryDto> findFriendsSlice(
@@ -33,7 +39,36 @@ public Slice<FriendSummaryDto> findFriendsSlice(
 
     public Slice<FriendSummaryDto> findFriendsBeforeGroupInviteSlice(
         final FriendBeforeGroupInviteRequest request) {
-        return memberFriendRepository.findFriendsBeforeGroupInvite(request);
+        final Slice<FriendSummaryDto> friendSummaryDtos = memberFriendRepository.findFriends(
+            request);
+
+        final List<Long> groupMemberIdsToExcludeBeforeGroupInvite = getGroupMemberIdsToExcludeBeforeGroupInvite(
+            request);
+
+        final List<FriendSummaryDto> friendSummaryBeforeGroupInvitedDtos = getFriendSummaryBeforeGroupInvitedDtos(
+            friendSummaryDtos, groupMemberIdsToExcludeBeforeGroupInvite);
+
+        return new SliceImpl<>(friendSummaryBeforeGroupInvitedDtos, friendSummaryDtos.getPageable(),
+            friendSummaryDtos.hasNext());
+    }
+
+    private List<Long> getGroupMemberIdsToExcludeBeforeGroupInvite(
+        final FriendBeforeGroupInviteRequest request) {
+        return Stream.concat(
+                memberGroupRepository.findGroupMemberIdsByGroupId(request.groupId()).stream(),
+                groupInviteRepository.findGroupMemberIdsByGroupIdAndGroupOwnerId(request.groupId(),
+                    request.memberId()).stream())
+            .distinct()
+            .toList();
+    }
+
+    private List<FriendSummaryDto> getFriendSummaryBeforeGroupInvitedDtos(
+        final Slice<FriendSummaryDto> friendSummaryDtos,
+        final List<Long> groupMemberIdsToExcludeBeforeGroupInvite
+    ) {
+        return friendSummaryDtos.getContent()
+            .stream()
+            .filter(dto -> !groupMemberIdsToExcludeBeforeGroupInvite.contains(dto.id())).toList();
     }
 
     public Slice<FriendSummaryDto> findFriendReceivingInvitesSlice(
diff --git a/backend/core/src/main/java/site/timecapsulearchive/core/domain/group/api/query/GroupQueryApi.java b/backend/core/src/main/java/site/timecapsulearchive/core/domain/group/api/query/GroupQueryApi.java
index 42695d39b..8cf12d1d5 100644
--- a/backend/core/src/main/java/site/timecapsulearchive/core/domain/group/api/query/GroupQueryApi.java
+++ b/backend/core/src/main/java/site/timecapsulearchive/core/domain/group/api/query/GroupQueryApi.java
@@ -9,7 +9,6 @@
 import java.time.ZonedDateTime;
 import org.springframework.http.ResponseEntity;
 import site.timecapsulearchive.core.domain.group.data.response.GroupDetailResponse;
-import site.timecapsulearchive.core.domain.group.data.response.GroupMemberInfosResponse;
 import site.timecapsulearchive.core.domain.group.data.response.GroupsSliceResponse;
 import site.timecapsulearchive.core.global.common.response.ApiSpec;
 
diff --git a/backend/core/src/main/java/site/timecapsulearchive/core/domain/group/api/query/GroupQueryApiController.java b/backend/core/src/main/java/site/timecapsulearchive/core/domain/group/api/query/GroupQueryApiController.java
index 4eb6a53ce..22349e302 100644
--- a/backend/core/src/main/java/site/timecapsulearchive/core/domain/group/api/query/GroupQueryApiController.java
+++ b/backend/core/src/main/java/site/timecapsulearchive/core/domain/group/api/query/GroupQueryApiController.java
@@ -1,7 +1,6 @@
 package site.timecapsulearchive.core.domain.group.api.query;
 
 import java.time.ZonedDateTime;
-import java.util.List;
 import lombok.RequiredArgsConstructor;
 import org.springframework.data.domain.Slice;
 import org.springframework.http.ResponseEntity;
@@ -13,9 +12,7 @@
 import org.springframework.web.bind.annotation.RestController;
 import site.timecapsulearchive.core.domain.group.data.dto.CompleteGroupSummaryDto;
 import site.timecapsulearchive.core.domain.group.data.dto.GroupDetailTotalDto;
-import site.timecapsulearchive.core.domain.group.data.dto.GroupMemberDto;
 import site.timecapsulearchive.core.domain.group.data.response.GroupDetailResponse;
-import site.timecapsulearchive.core.domain.group.data.response.GroupMemberInfosResponse;
 import site.timecapsulearchive.core.domain.group.data.response.GroupsSliceResponse;
 import site.timecapsulearchive.core.domain.group.service.query.GroupQueryService;
 import site.timecapsulearchive.core.global.common.response.ApiSpec;
@@ -60,7 +57,8 @@ public ResponseEntity<ApiSpec<GroupsSliceResponse>> findGroups(
         @RequestParam(defaultValue = "20", value = "size") final int size,
         @RequestParam(value = "created_at") final ZonedDateTime createdAt
     ) {
-        final Slice<CompleteGroupSummaryDto> groupsSlice = groupQueryService.findGroupsSlice(memberId,
+        final Slice<CompleteGroupSummaryDto> groupsSlice = groupQueryService.findGroupsSlice(
+            memberId,
             size,
             createdAt);
 
diff --git a/backend/core/src/main/java/site/timecapsulearchive/core/domain/group/repository/GroupQueryRepository.java b/backend/core/src/main/java/site/timecapsulearchive/core/domain/group/repository/GroupQueryRepository.java
index b13299a40..d9d6b63cf 100644
--- a/backend/core/src/main/java/site/timecapsulearchive/core/domain/group/repository/GroupQueryRepository.java
+++ b/backend/core/src/main/java/site/timecapsulearchive/core/domain/group/repository/GroupQueryRepository.java
@@ -5,7 +5,6 @@
 import java.util.Optional;
 import org.springframework.data.domain.Slice;
 import site.timecapsulearchive.core.domain.group.data.dto.GroupDetailDto;
-import site.timecapsulearchive.core.domain.group.data.dto.GroupMemberDto;
 import site.timecapsulearchive.core.domain.group.data.dto.GroupSummaryDto;
 
 
diff --git a/backend/core/src/main/java/site/timecapsulearchive/core/domain/member/repository/MemberRepository.java b/backend/core/src/main/java/site/timecapsulearchive/core/domain/member/repository/MemberRepository.java
index 8efa30cea..02c68c260 100644
--- a/backend/core/src/main/java/site/timecapsulearchive/core/domain/member/repository/MemberRepository.java
+++ b/backend/core/src/main/java/site/timecapsulearchive/core/domain/member/repository/MemberRepository.java
@@ -1,6 +1,5 @@
 package site.timecapsulearchive.core.domain.member.repository;
 
-import java.util.List;
 import java.util.Optional;
 import org.springframework.data.jpa.repository.Modifying;
 import org.springframework.data.jpa.repository.Query;
diff --git a/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/data/response/GroupSendingInviteMemberResponse.java b/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/data/response/GroupSendingInviteMemberResponse.java
index b4193f30f..a01e1a4fa 100644
--- a/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/data/response/GroupSendingInviteMemberResponse.java
+++ b/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/data/response/GroupSendingInviteMemberResponse.java
@@ -11,9 +11,11 @@ public record GroupSendingInviteMemberResponse(
     String profileUrl,
     ZonedDateTime sendingInvitesCreatedAt
 ) {
+
     public GroupSendingInviteMemberResponse {
         if (sendingInvitesCreatedAt != null) {
-           sendingInvitesCreatedAt = sendingInvitesCreatedAt.withZoneSameInstant(ResponseMappingConstant.ZONE_ID);
+            sendingInvitesCreatedAt = sendingInvitesCreatedAt.withZoneSameInstant(
+                ResponseMappingConstant.ZONE_ID);
         }
     }
 }
diff --git a/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/group_invite_repository/GroupInviteQueryRepository.java b/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/group_invite_repository/GroupInviteQueryRepository.java
index c9c5c3166..65a8aa3f2 100644
--- a/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/group_invite_repository/GroupInviteQueryRepository.java
+++ b/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/group_invite_repository/GroupInviteQueryRepository.java
@@ -18,6 +18,8 @@ Slice<GroupInviteSummaryDto> findGroupReceivingInvitesSlice(
         final ZonedDateTime createdAt
     );
 
+    List<Long> findGroupMemberIdsByGroupIdAndGroupOwnerId(final Long groupId, final Long memberId);
+
     List<GroupSendingInviteMemberDto> findGroupSendingInvites(
         final Long memberId,
         final Long groupId
diff --git a/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/group_invite_repository/GroupInviteQueryRepositoryImpl.java b/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/group_invite_repository/GroupInviteQueryRepositoryImpl.java
index 7f2b33ec6..abd1b5b4e 100644
--- a/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/group_invite_repository/GroupInviteQueryRepositoryImpl.java
+++ b/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/group_invite_repository/GroupInviteQueryRepositoryImpl.java
@@ -14,9 +14,7 @@
 import java.time.ZonedDateTime;
 import java.util.List;
 import lombok.RequiredArgsConstructor;
-import org.springframework.data.domain.Pageable;
 import org.springframework.data.domain.Slice;
-import org.springframework.data.domain.SliceImpl;
 import org.springframework.jdbc.core.BatchPreparedStatementSetter;
 import org.springframework.jdbc.core.JdbcTemplate;
 import org.springframework.stereotype.Repository;
@@ -32,8 +30,11 @@ public class GroupInviteQueryRepositoryImpl implements GroupInviteQueryRepositor
     private final JPAQueryFactory jpaQueryFactory;
 
     @Override
-    public void bulkSave(final Long groupOwnerId, final Long groupId,
-        final List<Long> groupMemberIds) {
+    public void bulkSave(
+        final Long groupOwnerId,
+        final Long groupId,
+        final List<Long> groupMemberIds
+    ) {
         jdbcTemplate.batchUpdate(
             """
                 INSERT INTO group_invite (
@@ -101,6 +102,19 @@ public Slice<GroupInviteSummaryDto> findGroupReceivingInvitesSlice(
         return SliceUtil.makeSlice(size, groupInviteSummaryDtos);
     }
 
+    @Override
+    public List<Long> findGroupMemberIdsByGroupIdAndGroupOwnerId(
+        final Long groupId,
+        final Long groupOwnerId
+    ) {
+        return jpaQueryFactory
+            .select(groupInvite.groupMember.id)
+            .from(groupInvite)
+            .where(groupInvite.groupOwner.id.eq(groupOwnerId).and(groupInvite.group.id.eq(groupId)))
+            .fetch();
+    }
+
+    @Override
     public List<GroupSendingInviteMemberDto> findGroupSendingInvites(
         final Long memberId,
         final Long groupId
diff --git a/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/member_group_repository/MemberGroupQueryRepository.java b/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/member_group_repository/MemberGroupQueryRepository.java
index f664cc0cc..b11a3eade 100644
--- a/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/member_group_repository/MemberGroupQueryRepository.java
+++ b/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/member_group_repository/MemberGroupQueryRepository.java
@@ -18,4 +18,6 @@ public interface MemberGroupQueryRepository {
     List<GroupMemberDto> findGroupMemberInfos(Long memberId, Long groupId);
 
     Optional<Long> findGroupMembersCount(Long groupId);
+
+    List<Long> findGroupMemberIdsByGroupId(final Long groupId);
 }
diff --git a/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/member_group_repository/MemberGroupQueryRepositoryImpl.java b/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/member_group_repository/MemberGroupQueryRepositoryImpl.java
index 9eafc40a2..84eb64bfe 100644
--- a/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/member_group_repository/MemberGroupQueryRepositoryImpl.java
+++ b/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/member_group_repository/MemberGroupQueryRepositoryImpl.java
@@ -102,4 +102,12 @@ public Optional<Long> findGroupMembersCount(final Long groupId) {
             .fetchOne()
         );
     }
+
+    public List<Long> findGroupMemberIdsByGroupId(final Long groupId) {
+        return jpaQueryFactory
+            .select(memberGroup.member.id)
+            .from(memberGroup)
+            .where(memberGroup.group.id.eq(groupId))
+            .fetch();
+    }
 }
diff --git a/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/member_group_repository/MemberGroupRepository.java b/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/member_group_repository/MemberGroupRepository.java
index 39393cb7b..6f2a9cf28 100644
--- a/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/member_group_repository/MemberGroupRepository.java
+++ b/backend/core/src/main/java/site/timecapsulearchive/core/domain/member_group/repository/member_group_repository/MemberGroupRepository.java
@@ -3,7 +3,6 @@
 import java.util.List;
 import java.util.Optional;
 import org.springframework.data.repository.Repository;
-import site.timecapsulearchive.core.domain.group.data.dto.GroupMemberDto;
 import site.timecapsulearchive.core.domain.member_group.entity.MemberGroup;
 
 public interface MemberGroupRepository extends Repository<MemberGroup, Long>,
diff --git a/backend/core/src/main/java/site/timecapsulearchive/core/global/config/redis/RedissonLockAspect.java b/backend/core/src/main/java/site/timecapsulearchive/core/global/config/redis/RedissonLockAspect.java
index f4444c523..5430e1499 100644
--- a/backend/core/src/main/java/site/timecapsulearchive/core/global/config/redis/RedissonLockAspect.java
+++ b/backend/core/src/main/java/site/timecapsulearchive/core/global/config/redis/RedissonLockAspect.java
@@ -32,7 +32,8 @@ public Object redissonLock(ProceedingJoinPoint joinPoint) throws Throwable {
         RedissonLock redissonLock = method.getAnnotation(RedissonLock.class);
 
         String lockKey =
-            method.getName() + DIVISION + RedisLockSpELParser.getLockKey(signature.getParameterNames(),
+            method.getName() + DIVISION + RedisLockSpELParser.getLockKey(
+                signature.getParameterNames(),
                 joinPoint.getArgs(), redissonLock.value());
 
         long waitTime = redissonLock.waitTime();
diff --git a/backend/core/src/test/java/site/timecapsulearchive/core/common/fixture/dto/FriendDtoFixture.java b/backend/core/src/test/java/site/timecapsulearchive/core/common/fixture/dto/FriendDtoFixture.java
index 5cf59d72a..4ee3f18b8 100644
--- a/backend/core/src/test/java/site/timecapsulearchive/core/common/fixture/dto/FriendDtoFixture.java
+++ b/backend/core/src/test/java/site/timecapsulearchive/core/common/fixture/dto/FriendDtoFixture.java
@@ -1,9 +1,16 @@
 package site.timecapsulearchive.core.common.fixture.dto;
 
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
 import java.util.List;
 import java.util.Optional;
+import java.util.stream.IntStream;
 import java.util.stream.LongStream;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Slice;
+import org.springframework.data.domain.SliceImpl;
 import site.timecapsulearchive.core.common.fixture.domain.MemberFixture;
+import site.timecapsulearchive.core.domain.friend.data.dto.FriendSummaryDto;
 import site.timecapsulearchive.core.domain.friend.data.dto.SearchFriendSummaryDto;
 import site.timecapsulearchive.core.domain.friend.data.dto.SearchFriendSummaryDtoByTag;
 import site.timecapsulearchive.core.global.common.wrapper.ByteArrayWrapper;
@@ -35,4 +42,18 @@ public static Optional<SearchFriendSummaryDtoByTag> getFriendSummaryDtoByTag() {
             .build());
 
     }
+
+    public static Slice<FriendSummaryDto> getFriendSummaryDtoSlice(int count, boolean hasNextPage) {
+        List<FriendSummaryDto> dtos = IntStream.range(0, count)
+            .mapToObj(i -> new FriendSummaryDto(
+                    (long) i,
+                    i + "testProfileUrl",
+                    i + "testNickname",
+                    ZonedDateTime.now(ZoneId.of("UTC")).plusDays(i)
+                )
+            )
+            .toList();
+
+        return new SliceImpl<>(dtos, Pageable.ofSize(count), hasNextPage);
+    }
 }
diff --git a/backend/core/src/test/java/site/timecapsulearchive/core/domain/friend/service/query/FriendQueryServiceTest.java b/backend/core/src/test/java/site/timecapsulearchive/core/domain/friend/service/query/FriendQueryServiceTest.java
index 5d5088689..4596edcc3 100644
--- a/backend/core/src/test/java/site/timecapsulearchive/core/domain/friend/service/query/FriendQueryServiceTest.java
+++ b/backend/core/src/test/java/site/timecapsulearchive/core/domain/friend/service/query/FriendQueryServiceTest.java
@@ -9,29 +9,43 @@
 import static org.mockito.BDDMockito.given;
 import static org.mockito.Mockito.mock;
 
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
 import java.util.Collections;
 import java.util.List;
+import java.util.Objects;
 import java.util.Optional;
 import org.assertj.core.api.SoftAssertions;
 import org.junit.jupiter.api.Test;
+import org.springframework.data.domain.Slice;
 import site.timecapsulearchive.core.common.fixture.domain.MemberFixture;
 import site.timecapsulearchive.core.common.fixture.dto.FriendDtoFixture;
+import site.timecapsulearchive.core.domain.friend.data.dto.FriendSummaryDto;
 import site.timecapsulearchive.core.domain.friend.data.dto.SearchFriendSummaryDto;
 import site.timecapsulearchive.core.domain.friend.data.dto.SearchFriendSummaryDtoByTag;
+import site.timecapsulearchive.core.domain.friend.data.request.FriendBeforeGroupInviteRequest;
 import site.timecapsulearchive.core.domain.friend.exception.FriendNotFoundException;
 import site.timecapsulearchive.core.domain.friend.repository.friend_invite.FriendInviteRepository;
 import site.timecapsulearchive.core.domain.friend.repository.member_friend.MemberFriendRepository;
+import site.timecapsulearchive.core.domain.member_group.repository.group_invite_repository.GroupInviteRepository;
+import site.timecapsulearchive.core.domain.member_group.repository.member_group_repository.MemberGroupRepository;
 import site.timecapsulearchive.core.global.common.wrapper.ByteArrayWrapper;
 
 class FriendQueryServiceTest {
 
     private final MemberFriendRepository memberFriendRepository = mock(
         MemberFriendRepository.class);
+    private final MemberGroupRepository memberGroupRepository = mock(MemberGroupRepository.class);
+    private final GroupInviteRepository groupInviteRepository = mock(GroupInviteRepository.class);
     private final FriendInviteRepository friendInviteRepository = mock(
         FriendInviteRepository.class);
 
     private final FriendQueryService friendQueryService = new FriendQueryService(
-        memberFriendRepository, friendInviteRepository);
+        memberFriendRepository,
+        memberGroupRepository,
+        groupInviteRepository,
+        friendInviteRepository
+    );
 
     @Test
     void 사용자는_주소록_기반_핸드폰_번호로_Ahchive_사용자_리스트를_조회_할_수_있다() {
@@ -103,4 +117,66 @@ class FriendQueryServiceTest {
         assertThatThrownBy(() -> friendQueryService.searchFriend(memberId, tag))
             .isInstanceOf(FriendNotFoundException.class);
     }
+
+    @Test
+    void 그룹장은_그룹_초대_전_초대_가능한_친구_목록을_조회할_수_있다() {
+        //given
+        Long memberId = 1L;
+        Long groupId = 1L;
+        int size = 20;
+        ZonedDateTime now = ZonedDateTime.now(ZoneId.of("UTC")).plusDays(1);
+
+        FriendBeforeGroupInviteRequest request = FriendBeforeGroupInviteRequest.of(memberId,
+            groupId,
+            size, now);
+        given(memberFriendRepository.findFriends(request)).willReturn(
+            FriendDtoFixture.getFriendSummaryDtoSlice(5, true));
+        given(memberGroupRepository.findGroupMemberIdsByGroupId(request.groupId())).willReturn(
+            List.of(3L));
+        given(groupInviteRepository.findGroupMemberIdsByGroupIdAndGroupOwnerId(request.groupId(),
+            request.memberId())).willReturn(List.of(4L));
+
+        Slice<FriendSummaryDto> friendsBeforeGroupInviteSlice = friendQueryService.findFriendsBeforeGroupInviteSlice(
+            request);
+
+        SoftAssertions.assertSoftly(
+            softly -> {
+                assertThat(friendsBeforeGroupInviteSlice.getContent()).isNotEmpty();
+                assertThat(friendsBeforeGroupInviteSlice.getContent()).allMatch(
+                    dto -> !dto.profileUrl().isBlank());
+                assertThat(friendsBeforeGroupInviteSlice.getContent()).allMatch(
+                    dto -> !dto.nickname().isBlank());
+                assertThat(friendsBeforeGroupInviteSlice.getContent()).allMatch(
+                    dto -> Objects.nonNull(dto.id()));
+                assertThat(friendsBeforeGroupInviteSlice.getContent()).allMatch(
+                    dto -> Objects.nonNull(dto.createdAt()));
+                assertThat(friendsBeforeGroupInviteSlice.hasNext()).isTrue();
+                assertThat(friendsBeforeGroupInviteSlice.getSize()).isEqualTo(5);
+            }
+        );
+    }
+
+    @Test
+    void 그룹장은_그룹_초대_전_이미_그룹멤버_혹은_그룹_요청을_보낸_사용자를_제외하고_초대_가능한_사용자를_조회한다() {
+        //given
+        Long memberId = 1L;
+        Long groupId = 1L;
+        int size = 20;
+        ZonedDateTime now = ZonedDateTime.now(ZoneId.of("UTC")).plusDays(1);
+
+        FriendBeforeGroupInviteRequest request = FriendBeforeGroupInviteRequest.of(memberId,
+            groupId,
+            size, now);
+        given(memberFriendRepository.findFriends(request)).willReturn(
+            FriendDtoFixture.getFriendSummaryDtoSlice(5, true));
+        given(memberGroupRepository.findGroupMemberIdsByGroupId(request.groupId())).willReturn(
+            List.of(3L));
+        given(groupInviteRepository.findGroupMemberIdsByGroupIdAndGroupOwnerId(request.groupId(),
+            request.memberId())).willReturn(List.of(4L));
+
+        Slice<FriendSummaryDto> friendsBeforeGroupInviteSlice = friendQueryService.findFriendsBeforeGroupInviteSlice(
+            request);
+
+        assertThat(friendsBeforeGroupInviteSlice.getContent()).isNotIn(3L, 4L);
+    }
 }
\ No newline at end of file