To apply for a health certificate in Xinxing County, Yunfu City, Guangdong Province, you can refer to the following steps:

1. Go to the local hospital or health center to consult the application process and requirements of health certificate.

2. Take personal identification documents, photos and other materials for physical examination.

3. According to the physical examination results, fill in the relevant forms and submit the application.

4. Pay the corresponding fees (generally between 20 and 30 yuan).

5. Waiting for the audit and obtaining the health certificate.