The first aspect: students lack self-discipline ability.

Secondly, the problems existing in students' study cannot be solved in time.

The learning environment of online courses is that students study at home. When students have doubts about knowledge, they can't get help from teachers in time, and they don't have the time and opportunity to ask their classmates. For some students, it will cause a backlog of knowledge. After a long time, students with poor autonomous learning ability will have the psychology of being tired of learning and giving up on themselves, which will also lead to polarization of students.