Four years. The academic system of direct enrollment of doctoral students in Jiangsu University is five years, and the academic system of postgraduate enrollment, independent enrollment of tutors and general enrollment is four years. Jiangsu University, located in Zhenjiang City, Jiangsu Province, is a key comprehensive university approved by the Ministry of Education and merged from the former Jiangsu University of Science and Technology, Zhenjiang Medical College and Zhenjiang Normal College. It is a university jointly established by Jiangsu Provincial People's Government, Ministry of Education and Ministry of Agriculture and Rural Affairs.