diff --git a/src/main/java/com/dnd/jjakkak/domain/meeting/repository/MeetingRepositoryImpl.java b/src/main/java/com/dnd/jjakkak/domain/meeting/repository/MeetingRepositoryImpl.java
index 907e27a..232126e 100644
--- a/src/main/java/com/dnd/jjakkak/domain/meeting/repository/MeetingRepositoryImpl.java
+++ b/src/main/java/com/dnd/jjakkak/domain/meeting/repository/MeetingRepositoryImpl.java
@@ -10,6 +10,7 @@
 import com.dnd.jjakkak.domain.meeting.entity.QMeeting;
 import com.dnd.jjakkak.domain.meeting.enums.MeetingSort;
 import com.dnd.jjakkak.domain.meetingcategory.entity.QMeetingCategory;
+import com.dnd.jjakkak.domain.member.entity.QMember;
 import com.dnd.jjakkak.domain.schedule.entity.QSchedule;
 import com.querydsl.core.types.OrderSpecifier;
 import com.querydsl.core.types.Projections;
@@ -196,14 +197,16 @@ public MeetingParticipantResponseDto getParticipant(String uuid) {
     @Override
     public boolean existsByMemberIdAndMeetingUuid(Long memberId, String meetingUuid) {
 
-        QMeeting meeting = QMeeting.meeting;
         QSchedule schedule = QSchedule.schedule;
+        QMeeting meeting = QMeeting.meeting;
+        QMember member = QMember.member;
 
         return from(schedule)
                 .join(schedule.meeting, meeting)
+                .join(schedule.member, member)
                 .where(meeting.meetingUuid.eq(meetingUuid)
-                        .and(schedule.member.memberId.eq(memberId)))
-                .select(schedule.count())
-                .fetchOne() > 0;
+                        .and(member.memberId.eq(memberId)))
+                .fetchCount() > 0;
+
     }
 }
diff --git a/src/main/java/com/dnd/jjakkak/domain/meetingmember/service/MeetingMemberService.java b/src/main/java/com/dnd/jjakkak/domain/meetingmember/service/MeetingMemberService.java
index 1d3287e..4f466d8 100644
--- a/src/main/java/com/dnd/jjakkak/domain/meetingmember/service/MeetingMemberService.java
+++ b/src/main/java/com/dnd/jjakkak/domain/meetingmember/service/MeetingMemberService.java
@@ -47,13 +47,16 @@ public void createMeetingMemberBySchedule(Long scheduleId, Long memberId) {
         Schedule schedule = scheduleRepository.findById(scheduleId)
                 .orElseThrow(ScheduleNotFoundException::new);
 
-        MeetingMember meetingMember = MeetingMember.builder()
-                .pk(pk)
-                .member(member)
-                .meeting(schedule.getMeeting())
-                .build();
-
-        meetingMemberRepository.save(meetingMember);
+        // 이미 리더는 모임을 생성할 때 회원으로 추가되어 있으므로 제외
+        if (!schedule.getMeeting().getMeetingLeaderId().equals(memberId)) {
+            MeetingMember meetingMember = MeetingMember.builder()
+                    .pk(pk)
+                    .member(member)
+                    .meeting(schedule.getMeeting())
+                    .build();
+
+            meetingMemberRepository.save(meetingMember);
+        }
     }
 
     /**