Student ID card is the electronic certificate of student identity, which is mainly used for school management such as school registration, student status change, student growth records, information materials such as school education and teaching activities, social practice and off-campus activities, as well as the application of school management services such as access control, attendance, borrowing books and collecting utensils, and will be gradually extended to off-campus medical electronic certificate, social actual records, popular science education activities records, physical health records, real-name online registration and so on.