Is it legal to apply for a health certificate every year in Shenzhen?

Yes According to the inquiry of official website of Shenzhen Health and Wellness Committee, the annual examination of Shenzhen Health Certificate refers to the health certificate handling service provided by the website of Shenzhen Health and Wellness Committee, which can be handled by citizens who need this certificate. The health certificate is valid for one year. It will expire after more than one year, and you need to apply again. It is legal for Shenzhen to issue a health certificate every year, because it is a project proposed by the municipal government to facilitate citizens' lives.