1993/9- 1998/7. From September 2000 to July 2002, he was an undergraduate in the Department of Clinical Medicine of Bethune Medical University, a postgraduate in the Key Laboratory of Radiobiology of the Ministry of Health of Jilin University from September 2002 to July 2005, and a doctoral student in the Key Laboratory of Radiobiology of the Ministry of Health of Jilin University from March 2007 to July 2007. Visiting scholar at Institute of Medicinal Chemistry, Vienna University of Veterinary Medicine, Austria, from 20 10/8 to present, associate professor at Department of Radiobiology, School of Radiation and Protection, Suzhou University, from 2019/2012/3, visiting scholar at Takasaki Institute of Radiation Research, Japan Atomic Energy Agency.