He has worked in the China National Intellectual Property Administration since August 1989.

During his work in the China National Intellectual Property Administration, he attended the Civil and Commercial Law Postgraduate Program of China University of Political Science and Law, and went to the John Marshall Law School in the United States for further study, obtaining a master's degree in law.

He has successively served as the deputy director of the Chemical Invention Examination Department, the deputy director of the Coordination and Management Department, the deputy director of the Patent Reexamination Commission, and the deputy director of the Pharmaceutical and Biological Invention Examination Department of the China National Intellectual Property Administration. As a first level examiner.