diff --git a/app/model/LlmDemoMdel.py b/app/model/LlmDemoMdel.py
index 8874c0d..2916828 100644
--- a/app/model/LlmDemoMdel.py
+++ b/app/model/LlmDemoMdel.py
@@ -7,7 +7,7 @@ from fastapi import FastAPI, APIRouter, HTTPException
 from pydantic import BaseModel, ConfigDict
 from sqlmodel import SQLModel, Field, select
 
-from app.utils.model_utils import to_camel, format_datetime_to_string, format_date_to_string, FormattedDatetime, FormattedDate, current_datetime
+from app.utils.model_utils import to_camel, format_datetime_to_string, format_date_to_string, FormattedDatetime, FormattedDate, current_datetime, FormattedDecimal
 from app.utils.mysql_utils import AsyncSessionDep
 
 
@@ -35,7 +35,7 @@ class LlmDemoModel(SQLModel, table=True):
   datetime_start: FormattedDatetime = Field(default=None, description="开通会员时间")
   datetime_end: FormattedDatetime = Field(default=None, description="会员截止到期时间")
   birthday: FormattedDate = Field(default=None, description="生日")
-  amount: Decimal = Field(default=0, description="金额")
+  amount: FormattedDecimal = Field(default=Decimal(0), description="金额")
 
 
 def add_llm_demo_route(app: FastAPI):