It takes two and a half years to apply for the undergraduate course of the National Open University, and you can graduate and get a diploma. The National Open University implements the credit system, and the student status is valid for eight years from the date of registration. The minimum length of schooling for undergraduate and senior high school entrance examination in the Open University of China is 2.5 years, and the minimum length of schooling for senior high school entrance examination in the Open University of China is 5 years.

The National Open University can apply twice a year. The application of National Open University can be divided into spring and autumn. The spring registration time is before March and the autumn registration time is before September. Admission is relatively simple, and candidates can enter the school without taking the test.