1982-1984 director of the health and epidemic prevention department of the Ministry of health
1983-1992, the first president of Chinese Academy of Preventive Medicine.
1989-1999 Dean of School of Public Health, Peking Union Medical College.
1985—— Professor of Nutrition and Senior Consultant of China Center for Disease Control and Prevention.
200 1- Senior Advisor, National Food and Nutrition Advisory Committee
2003-Member of the Advisory Committee of Institute of Nutrition Sciences, Shanghai Academy of Life Sciences, Chinese Academy of Sciences