2. Registration training: Check the registration of fitness instructor training class in official website, China Bodybuilding Association.

3. Learning and training: After attending the training course, you need to seriously study the relevant knowledge and skills of fitness instructors, including fitness theory, sports science, fitness training, fitness nutrition and so on.

4. Take the exam: After completing the training, you need to take the fitness instructor exam certified by China Bodybuilding Association. The content of the exam includes theory and practice, and you need to pass the exam to get a fitness instructor's certificate.

5. License: After passing the exam, you can download and print the fitness instructor's license in official website, China Bodybuilding Association.