In teaching, I have served as the teaching and experimental guidance of the courses of plant physiology and biochemistry and general plant pathology, and set an example by teaching and educating people, being conscientious and paying attention to actual results. On July 20 10, the extracurricular academic research work "Host Specialization of Three Hosts of Spodoptera exigua" directed by three college students won the "First Prize" in the Second Youth Academic Research Competition of Kunming University. In scientific research, he is rigorous in his studies and studies hard. Since 2008, Comrade Lei Yu has successively participated in six scientific research projects, including the key project of the Science Fund of the Provincial Education Department 1 and the project of introducing talents at the school level 1, and participated in the doctoral program fund of the Ministry of Education and the national natural fund project as the first participant. Committed to the field of plant protection: plant diseases, pathogenic metabolites, the interaction between pathogenic fungi and host plants. In the last three years, he published 13 papers, including 10 papers by the first author or correspondent, and 4 papers retrieved by SCI (the impact factor of a single paper is above 2. 15). From September 20 10, he was invited to write a review for the international magazine Plant Diseases (USA). The recommendation of this work is: "In recent years, the research on the interaction mechanism between plants and pathogenic fungi has become a hot issue in plant pathology and life sciences. In this study, the cross-infection test and host specialization of sweet potato strains isolated from dicotyledonous plants (pomegranate) and monocotyledonous plants (taro) were studied for the first time in the world. This provides a scientific basis for further understanding the mutual disease and infection mechanism of fungal pathogens among different host plants. "