The official website of health certificate is usually linked to the system of health department. This hook is to ensure the accuracy and convenience of health certificate application and management and the real-time update of data. When an applicant submits a health certificate application, relevant personal information and physical examination results will interact with the health system through the health certificate official website. This can ensure the authenticity and validity of the health certificate and facilitate the management and supervision of the health certificate by relevant departments. Hooking can also realize information sharing and inquiry, which is convenient for applicants and relevant departments to obtain health certificate related information in time and improve the efficiency and convenience of handling.