It is difficult for graduate students of Shanghai Jiaotong University to re-test. Shanghai Jiaotong University Medical College will not disclose the re-examination subjects before the re-examination of graduate students, nor will it publish the reference books and outlines of the re-examination of graduate students, which directly leads to the difficulty in knowing which teaching materials to use and which knowledge points to test before the re-examination. Therefore, it is difficult for graduate students of Shanghai Jiaotong University to re-test.