diff --git a/src/chat/repository/chatroom.repository.js b/src/chat/repository/chatroom.repository.js
index 3b07342..c96353a 100644
--- a/src/chat/repository/chatroom.repository.js
+++ b/src/chat/repository/chatroom.repository.js
@@ -22,6 +22,13 @@ export const ChatroomRepository = {
     });
   },
 
+  async reactivateChatroom(chatroomId, updateData) {
+    return await prisma.chatroom.update({
+      where: { id: chatroomId },
+      data: updateData,
+    });
+  },
+
   async findChatroomsByUser(account) {
     // 1. 채팅방 기본 정보 + 마지막 메시지(내용, 생성시간, id) 조회
     let chatrooms;
diff --git a/src/chat/service/chatroom.service.js b/src/chat/service/chatroom.service.js
index 961444b..9f70ecf 100644
--- a/src/chat/service/chatroom.service.js
+++ b/src/chat/service/chatroom.service.js
@@ -26,7 +26,7 @@ export const ChatroomService = {
     }
 
     // 채팅방 중복 확인
-    const existing = await ChatroomRepository.findChatroomByUsersAndCommission(
+    let existing = await ChatroomRepository.findChatroomByUsersAndCommission(
       dto.userId,
       dto.artistId,
       dto.commissionId
@@ -34,6 +34,12 @@ export const ChatroomService = {
 
     // 기존 채팅방 반환
     if (existing) {
+      if (existing.hiddenUser || existing.hiddenArtist) {
+        existing = await ChatroomRepository.reactivateChatroom(existing.id, {
+          hiddenUser: false,
+          hiddenArtist: false,
+        });
+      }
       return existing;
     }