1. education background: major in medicine or otolaryngology is required.

2. Training course: You must attend the training course of occupational noise deafness diagnostician. Training courses are provided by relevant medical and health departments, universities or professional associations.

3. Practical experience: You need to have some clinical practical experience in otolaryngology or related fields.

4. Qualification examination: you need to take the qualification examination for occupational noise deafness diagnostic doctors. The examination includes the evaluation of theoretical knowledge and practical operation.

5. Application for registration: After successfully passing the qualification examination, you need to apply to the relevant medical and health departments or professional associations for registration as an occupational noise deafness diagnostician.

6. After checking and meeting the requirements, you will get a registration certificate to prove that you have this qualification.