Abstract: The phenomenon of college students Brushing lessons is intensified in MOOC teaching. “Brushing lessons” refers to students’ various improper online behaviors to achieve their own goals but not for the purpose of acquiring knowledge or improving ability. There are two types of brushing lessons: paid（replaced）Brushing lessons and indulgent Brushing lessons. Brushing lessons is an action that seriously violates study morals, violates school rules and disciplines, and is suspected of breaking the law. The reasons for the occurrence of Brushing lessons lie in the following aspects: the lack of learning motivation of college students, the insufficient recognition and attention of the university, low quality of online courses, unreasonable arrangement of online programme, inadequate supervision and insufficient ideological education for students. In order to stop college students Brushing lessons, all-round and full-element methods should be followed. For example, colleges and universities should attach great importance, formulate and implement scientific and effective rules, improve the quality of online courses, well arrange the online programs, supervise the study in multiple ways, and conduct proper ideological and political education for college students, and social violations should be cracked down.

Key words: MOOC, college student, Brushing lessons