Three days. According to the information of the financial ladder, the repayment grace period of Doudou money varies according to the loan contract. Under normal circumstances, Doudou Money has a three-day grace period, and repayment within three days after the bill repayment date is regarded as normal repayment and will not be considered overdue. Doudou Money has been connected to the credit information system of China People's Bank, so overdue repayment of Doudou Money will be recorded in the credit information report, which will hinder a series of consumer activities such as loan and credit card processing in the future.