diff --git a/backend/router/v1/auth/protocol.py b/backend/router/v1/auth/protocol.py
index 3bce56f..d642957 100644
--- a/backend/router/v1/auth/protocol.py
+++ b/backend/router/v1/auth/protocol.py
@@ -34,7 +34,7 @@ class Req_CreateAccount(AuthProtocol):
 
 
 class Res_CreateAccount(Res_WebPacketProtocol):
-    su_id: str = ""
+    su_id: str = Field("", description="생성된 유저 식별자(uuid)")
 
 
 class Res_RefreshToken(Res_WebPacketProtocol):