The system of fitness instructor certificate is different. There are currently four categories. 1, national certificate: national fitness instructor qualification certificate. 2. Class certificate, China Bodybuilding Association, Beijing Bodybuilding Association, etc. The association certificate is more national and international. 3. International certificate. World-famous. The training cost of national fitness instructors is generally around 3000-5000 yuan. National fitness instructor training classes can learn professional fitness instructor skills and theoretical knowledge.