The principle of timing on the training website is that some courses are charged by time, and how much is it per hour to meet the needs of students with different schedules. Cracking: learners need to allocate time to different learning activities, such as course study, practical operation, after-class review, questioning and so on. According to relevant information, most of the online training schools built by general teaching and training institutions are sold during class hours. When a student watches a class, it means canceling a class, which is also the origin of the word cancellation. It is best understood that classes are cancelled according to time. Some courses are charged by time, and how much is it per hour to meet the needs of students with different schedules. The function of the system provides a convenient learning environment for learners. Learners can freely choose learning content here, arrange their own learning progress, know their learning progress at any time, and feedback the learning effect in time. The design of the system enables learners to complete their learning tasks easily and confidently.