The track and field referee certificate is a lifetime certificate and has no validity period. First-class athletes refer to some people who perform best in a particular sport. After reaching the conditions of first-class athletes, they can be upgraded to first-class athletes. There are many ways to upgrade, but they are all difficult.
In fact, the first-class referee certificate means that the holder can be competent for provincial referee work and can participate in some national competitions. It should be noted that in China's detailed regulations, different sports need to obtain different referee certificates in order to perform referee work and duties.