About 7 days. Because credit card processing usually takes 7 days, credit card application requires a review process by the system, but now the background review speed of credit card application is relatively fast, so if you apply for a credit card on Douyin, you only need to check your credit card If there is no overdue record, the application will be successful immediately. However, after the application is successful, a card will be mailed to you for activation. This process will take about a week.