Abstract: Situational teaching is a teaching method that makes use of the external environment to resonate with the students' mind. The infectious disease epidemiology is a discipline that attaches equal importance to both theory and practice. It studies the occurrence, development and distribution of infectious diseases among people to formulate countermeasures and measures for prevention, control and elimination of infectious diseases. At present, students majoring in preventive medicine show the phenomenon of high theoretical achievement and low practical ability, so it is urgent to establish a new education model of infectious disease epidemiology that takes students as the center and combines theory with practice. Online teaching is becoming a new mode of lecture, which is not only a challenge but also an opportunity for teaching in colleges and universities. On the basis of the traditional teaching model of infectious disease epidemiology and the student-centered situational teaching model, this paper gives full play to students' subjective initiative and enables students to combine theory with practice. This model of teaching can deepen students' understanding of the theoretical knowledge of infectious disease epidemiology and improve the ability of practical operation, so as to lay a solid foundation for epidemic prevention and control in public health posts in the future.

Key words: Situational teaching, Infectious disease, Epidemiology, Medical students