diff --git a/app/api/translator.py b/app/api/translator.py
index 600095e..39691a7 100644
--- a/app/api/translator.py
+++ b/app/api/translator.py
@@ -15,8 +15,6 @@ from settings import settings
 translator_router = APIRouter()
 
 # For list of language codes, please refer to `https://api.fanyi.baidu.com/doc/21`
-from_lang = 'en'
-to_lang = 'zh'
 
 
 # endpoint = 'https://api.fanyi.baidu.com'
diff --git a/app/schemas/trans_schemas.py b/app/schemas/trans_schemas.py
index 2aa9c5d..edec1b9 100644
--- a/app/schemas/trans_schemas.py
+++ b/app/schemas/trans_schemas.py
@@ -5,8 +5,8 @@ from pydantic import BaseModel, field_validator, model_validator
 
 class TransRequest(BaseModel):
     query: str
-    from_lang: Literal['auto', 'fr', 'jp', 'zh', 'en'] = 'auto'
-    to_lang: Literal['fr', 'jp', 'zh', 'en'] = 'zh'
+    from_lang: Literal['auto', 'fra', 'jp', 'zh', 'en'] = 'auto'
+    to_lang: Literal['fra', 'jp', 'zh', 'en'] = 'zh'
 
     @field_validator('from_lang', 'to_lang')
     @classmethod