In this case, you can log in through your mobile phone, and then fill in your family's information for real-name authentication, and then get the corresponding health code.
Wechat health code cannot add family members. The application for WeChat health code requires that the real-name authentication information of WeChat is consistent with the information of the health code applicant. If WeChat is not my own, I can't apply for a health code. When applying for WeChat health code for family members, it is recommended to re-register and apply for WeChat to register a micro-signal with real-name authentication for family members.