He has been engaged in teaching, scientific research and postgraduate guidance in various disciplines of criminal law (including criminal law, international criminal law, criminology, criminal psychology, criminal investigation, etc.). ) In South China Normal University, Xiangtan University, Guangzhou University and Hunan Police College. He has served as director of the Academic Affairs Office, director of the Scientific Research Office, director of the Political and Educational Affairs Office, and secretary of the Party branch of the Training Department. Worked in the public security system 12 years, and was awarded the rank of third-class police Commissioner by the Ministry of Public Security in 2002.