Zhang Aihua is a professor in the Department of Health Toxicology of Guiyang Medical College. 1978 12 graduated from the medical department of Guiyang medical college and stayed as a teacher. After that, he studied in Sun Yat-sen Medical University, Shanghai Medical University, West China Medical University and Sichuan International Studies University for 6 years. 200110-200310 studied at the French National Research Center. He is currently the dean of the School of Public Health of Guiyang Medical College. 200 1 won the title of national excellent teacher. In 2003, he was granted a special allowance by the State Council and an expert in Guizhou Province. In 2004, he won the honorary title of National March 8th Red Flag Bearer, and was approved as the first batch of doctoral tutors of Guiyang Medical College in February of the same year. He has served as a teaching assistant, lecturer, associate professor and professor of labor hygiene, occupational diseases and health toxicology in Guiyang Medical College. He is also a member of the Advisory Committee of Endemic Diseases Experts of the Ministry of Health, a director of China Toxicology Society, a director of China Environmental Mutation Society, a director of the Endemic Diseases Society of Chinese Medical Association, a deputy director of the Anti-cancer and Anti-mutation Professional Committee of China Environmental Mutation Society, a member of the Risk Assessment Professional Committee of China Environmental Mutation Society, an executive director of Guizhou Preventive Medicine Association, an executive director of Guizhou Dosage and Testing Technology Society, a forensic expert and a member of Guizhou Identification Committee. Member of International Society of Environmental Catastrophe, editorial board of China Journal of Epidemiology, Environment and Occupational Medicine, Canceration, Aberration and Catastrophe, and Journal of Guiyang Medical College. Member of the Standing Committee of Guizhou Provincial Political Consultative Conference, Vice Chairman of China Agricultural Workers Democratic Party in Guizhou Province.