diff --git a/src/main/kotlin/com/teamapi/palette/controller/RoomController.kt b/src/main/kotlin/com/teamapi/palette/controller/RoomController.kt
index d4b5520..a53ada5 100644
--- a/src/main/kotlin/com/teamapi/palette/controller/RoomController.kt
+++ b/src/main/kotlin/com/teamapi/palette/controller/RoomController.kt
@@ -1,6 +1,7 @@
 package com.teamapi.palette.controller
 
 import com.teamapi.palette.dto.room.CreateRoomRequest
+import com.teamapi.palette.dto.room.UpdateRoomTitleRequest
 import com.teamapi.palette.response.Response
 import com.teamapi.palette.response.ResponseBody
 import com.teamapi.palette.service.RoomService
@@ -19,6 +20,13 @@ class RoomController (
     fun getRoomList() = roomService.getRoomList()
         .map { ResponseBody.ok("룸 조회 성공", it) }
 
+    @PatchMapping("/title")
+    fun updateRoomTitle(
+        @RequestBody updateRoomTitleRequest: UpdateRoomTitleRequest
+    ) = roomService
+        .updateRoomTitle(updateRoomTitleRequest)
+        .thenReturn(Response.ok("룸 업데이트 완료"))
+
     @DeleteMapping("/{roomId}")
     fun deleteRoom(@PathVariable roomId: Long) = roomService.deleteRoom(roomId)
         .thenReturn(Response.ok("룸 삭제 완료"))
diff --git a/src/main/kotlin/com/teamapi/palette/dto/room/UpdateRoomTitleRequest.kt b/src/main/kotlin/com/teamapi/palette/dto/room/UpdateRoomTitleRequest.kt
new file mode 100644
index 0000000..77a5d1d
--- /dev/null
+++ b/src/main/kotlin/com/teamapi/palette/dto/room/UpdateRoomTitleRequest.kt
@@ -0,0 +1,6 @@
+package com.teamapi.palette.dto.room
+
+data class UpdateRoomTitleRequest (
+    val id: Long,
+    val title: String
+)
\ No newline at end of file
diff --git a/src/main/kotlin/com/teamapi/palette/entity/Room.kt b/src/main/kotlin/com/teamapi/palette/entity/Room.kt
index ea14f53..03bf193 100644
--- a/src/main/kotlin/com/teamapi/palette/entity/Room.kt
+++ b/src/main/kotlin/com/teamapi/palette/entity/Room.kt
@@ -6,7 +6,7 @@ import org.springframework.data.relational.core.mapping.Column
 data class Room(
     @Id
     val id: Long? = null,
-    val title: String? = null,
+    val title: String? = "New Chat",
     @Column("user_id")
     val userId: Long
 )
diff --git a/src/main/kotlin/com/teamapi/palette/service/RoomService.kt b/src/main/kotlin/com/teamapi/palette/service/RoomService.kt
index cde4d3d..49241bd 100644
--- a/src/main/kotlin/com/teamapi/palette/service/RoomService.kt
+++ b/src/main/kotlin/com/teamapi/palette/service/RoomService.kt
@@ -2,6 +2,7 @@ package com.teamapi.palette.service
 
 import com.teamapi.palette.dto.room.CreateRoomRequest
 import com.teamapi.palette.dto.room.RoomResponse
+import com.teamapi.palette.dto.room.UpdateRoomTitleRequest
 import com.teamapi.palette.entity.Room
 import com.teamapi.palette.repository.RoomRepository
 import com.teamapi.palette.repository.UserRepository
@@ -23,7 +24,7 @@ class RoomService (
             .me()
             .findUser(userRepository)
             .flatMap {
-                roomRepository.save(Room(userId = it.id!!, title = request.title)).then()
+                roomRepository.save(Room(userId = it.id!!)).then()
             }
     }
 
@@ -40,6 +41,26 @@ class RoomService (
             .collectList()
     }
 
+    fun updateRoomTitle(updateRoomTitleRequest: UpdateRoomTitleRequest): Mono<Void> {
+        return sessionHolder
+            .me()
+            .findUser(userRepository)
+            .flatMap { user ->
+                roomRepository
+                    .findById(updateRoomTitleRequest.id)
+                    .switchIfEmpty { Mono.error(CustomException(ErrorCode.ROOM_NOT_FOUND)) }
+                    .flatMap { room ->
+                        if (user.id == room.userId) {
+                            roomRepository
+                                .save(room.copy(title = updateRoomTitleRequest.title))
+                        } else {
+                            Mono.error(CustomException(ErrorCode.FORBIDDEN))
+                        }
+                    }
+            }
+            .then()
+    }
+
     fun deleteRoom(roomId: Long): Mono<Void> {
         return sessionHolder
             .me()