Teaching fellow, Institute of Chinese ＆ Western Integrative Medicine, Xi’an Medical University 1986 – 1993

Lecturer, Institute of Chinese ＆ Western Integrative Medicine, Xi’an Medical University 1993 – 1994

Center for Molecular Science, First Affiliated Hospital, Xi’an Medical University 1994– 2000

Lecturer, Department of Pharmacology, School of Medicine, Xi’an Jiaotong University 2000 - 2001

Associate Professor, Department of Pharmacology, School of Medicine, Xi’an Jiaotong University 2001 - 2006

Visiting Scholar,, Pharmacology, University of Washington 2001- 2002

Professor, Department of Pharmacology, School of Medicine, Xi’an Jiaotong University 2006--present