In recent years, with the development of science and technology, APP has penetrated into all aspects of our lives, bringing us great convenience. However, many apps will appear in the process of using the charging pop-up, especially some free apps, they will provide free basic services, but will charge for some functions, and the fees are relatively high. This kind of charging pop-up window sometimes appears in the process of use, and once it appears, it will appear ugly, and the user may be forced to pay the fee, which will cause inconvenience to the user. In addition, this charging pop-up window also has security risks, there may be fraud or arrears of fees, and harm to the equipment. Therefore, in order to prevent this from happening, the charging pop-ups of the app should be strictly managed to ensure that users use them safely and will not suffer any losses. In addition, reminders should be made so that users can be more cautious when using the app to avoid losses.