You need two one-inch bareheaded color photos to apply for a health certificate. If the physical examination results meet the conditions for issuing health certificates, health certificates will be issued after passing the training of health laws and regulations organized by health supervision institutions. If the physical examination results do not meet the conditions for issuing a health certificate, a health certificate shall not be issued. Health certificate refers to the proof of preventive health examination, which proves that the examinee has the health quality to engage in the prescribed business. Health certificate mainly involves six diseases in five industries, which largely protects the health of employees and clients.