Abstract:Carrying integrating ideological and political elements in animal husbandry microbiology course is helpful to establish correct ideological and moral system and firm ideal and conviction of animal science major students. The teaching method of PBL is an important teaching method of ideological and political education design in animal husbandry microbiology course. It takes vivid human deeds and historical events as cases, and raises questions to inspire students to understand the ideological and political connotation of the cases, so as to improve students learning knowledge and their own ideological and moral level. Under the background of COVID19 epidemic, how to effectively integrate internal ideological and political elements and contains them in the course teaching should be included in the ideological and political teaching tasks of animal husbandry microbiology course. This paper discusses this problem in depth. Based on the emergence of many advanced person, deeds and related events in the COVID19 epidemic, teachers use heuristics to ask questions and guide students to think and discuss, so as to effectively enhance the participation of students. Combined with the study and explanation of professional knowledge, students can realize the ideological and moral significance of cases, and then internalize it into their own ideals and beliefs. In this way, students can not only explore the true meaning of science, but also cultivate patriotism and professional selfidentity.