According to relevant data, an epidemic broke out in Changchun Institute of Science and Technology. Because from September of 10, according to the latest details released by Jilin City, a cluster infection broke out in Changchun Institute of Science and Technology, and many infected people were closely contacted by the same person, which led to the infection of college students. The reason is that students go out to eat, get in touch with close contacts and bring the source of the disease back to school. On September 14- 15, changchun university of science and technology once again disinfected the campus environment in a planned, step-by-step and full coverage way.