If there is only one mobile phone with health code at home, first pay attention to the official account of WeChat with health code. Then click Register, register the mobile phone owner first, and enter your ID number, address and mobile phone number. After the registration is successful, click the health code to display your ID number, and then there is a box under the health card to add family members. Enter the real information of the next family member according to his prompt, and fill it in as required to show that the binding is successful. Return to your health card page, and then click Add Family Members. A mobile phone number can bind the information of ten people.