Three times. Repeated examination of master's thesis of Jiangsu University depends on the quality of your thesis. Repetition detection is to detect the repetition rate and similarity of your paper. If your paper is of high quality and you don't quote much in the writing process, then it is enough to repeat the test twice. If there are many citations, the repeated detection will reach about three times. Therefore, there are three opportunities to duplicate the master's thesis of Jiangsu University.