diff --git a/backend/core/src/main/java/com/rollthedice/backend/domain/debate/service/DebateMessageService.java b/backend/core/src/main/java/com/rollthedice/backend/domain/debate/service/DebateMessageService.java
index 8680945f..032ee552 100644
--- a/backend/core/src/main/java/com/rollthedice/backend/domain/debate/service/DebateMessageService.java
+++ b/backend/core/src/main/java/com/rollthedice/backend/domain/debate/service/DebateMessageService.java
@@ -47,4 +47,11 @@ public List<DebateMessageResponse> getDebateMessages(Long roomId) {
                 .stream().map(debateMessageMapper::toResponse)
                 .collect(Collectors.toList());
     }
+
+    public StringBuilder getAllMessages(Long roomId) {
+        StringBuilder sb = new StringBuilder();
+        getDebateMessages(roomId)
+                .forEach(message -> sb.append(message.getMessage()));
+        return sb;
+    }
 }
diff --git a/backend/core/src/main/java/com/rollthedice/backend/domain/debate/service/DebateRoomService.java b/backend/core/src/main/java/com/rollthedice/backend/domain/debate/service/DebateRoomService.java
index 5b112b20..fb94b037 100644
--- a/backend/core/src/main/java/com/rollthedice/backend/domain/debate/service/DebateRoomService.java
+++ b/backend/core/src/main/java/com/rollthedice/backend/domain/debate/service/DebateRoomService.java
@@ -3,6 +3,7 @@
 import com.rollthedice.backend.domain.debate.dto.request.DebateRoomRequest;
 import com.rollthedice.backend.domain.debate.dto.response.DebateRoomResponse;
 import com.rollthedice.backend.domain.debate.dto.response.DebateSummaryResponse;
+import com.rollthedice.backend.domain.debate.exception.DebateRoomNotFoundException;
 import com.rollthedice.backend.domain.debate.mapper.DebateRoomMapper;
 import com.rollthedice.backend.domain.debate.repository.DebateRoomRepository;
 import com.rollthedice.backend.domain.member.entity.Member;
@@ -46,12 +47,16 @@ public void deleteDebateRoom(Long roomId) {
     }
 
     @Transactional
-    public DebateSummaryResponse summaryDebateMessages(final Long roomId) {
-        StringBuilder sb = new StringBuilder();
-        debateMessageService.getDebateMessages(roomId).forEach(message -> sb.append(message.getMessage()));
+    public DebateSummaryResponse summaryDebate(final Long roomId) {
+        StringBuilder sb = debateMessageService.getAllMessages(roomId);
+        String summary = clovaSummary.summaryDebate(sb.toString());
+        debateRoomRepository.findById(roomId).orElseThrow(DebateRoomNotFoundException::new)
+                .updateSummary(summary);
+
         return DebateSummaryResponse.builder()
                 .roomId(roomId)
-                .summary(clovaSummary.summaryDebate(sb.toString()))
+                .summary(summary)
                 .build();
     }
+
 }