Li Jintang, Ph.D., associate professor of Weifang Institute of Science and Technology, is an outstanding young intellectual in Weifang. Mainly engaged in the diagnosis and prevention of vegetable diseases and insect pests. Teaching many courses, such as general plant pathology, agricultural plant pathology, identification and prevention of vegetable diseases and insect pests. He presided over and participated in 8 provincial and ministerial projects, wrote more than 20 scientific research papers, and successfully developed the software of "Expert System for Diagnosis and Control of Vegetable Diseases and Pests". Long-term engaged in grass-roots agricultural technology promotion, guidance and research activities, accumulated a lot of relevant information and practical experience.