Need to apply for a permit. According to the selection conditions of exam-free students in Southwest Jiaotong University, the results of exam-free students are calculated on the basis of the initial test results, and the re-test and make-up test results are not included. According to the requirements of "Students' Physical Health Standard", college students need to complete six tests, namely, height, weight, vital capacity, step test, 50-meter running or standing long jump. If you are overweight due to physical reasons, you can apply for postponement of the test or exemption from the test, and a physical fitness test exemption certificate must be issued by a local third-class first-class hospital. The deferred examination results approved and filed by the school's academic affairs office shall be calculated according to the results of the formal examination.