The failure of Jiangsu University's course selection system was caused by the system crash. Because there will be many students in the course selection system of Jiangsu University during the course selection, too many students will cause the system to crash and get stuck, so it is impossible to log in. Jiangsu University, located in Zhenjiang City, Jiangsu Province, is a national key university jointly established by Jiangsu Provincial People's Government, Ministry of Education and Ministry of Agriculture and Rural Affairs in People's Republic of China (PRC). It is a Class A construction university in the peak plan of high-level university construction in Jiangsu Province, and was selected as the first batch of universities in the excellent engineer education and training plan of the Ministry of Education.