Old people and children can apply for health codes by their families. Due to equipment and other factors can not be resolved, you can replace the old card or pass card and other valid documents, and do a good job in registration management. Step 1: We need to check whether we are certified or not on my page of Liaoshitong APP. If we are not certified, we can click "Not Certified" for real-name authentication first. Step 2: After authentication, click the health password on the right side of the screen to enter the page of using health password. Step 3: Select Generate Health Code. Step 4: After entering the health code display page, display our health code. We need to click Generate to fill in the form and enter the information page of binding other users. Step 5: Then click the+sign, enter the information of the person who added the information, and enter the identity information of the child who applied for the health code. Step 6: After the binding is successful, the bound user will appear on the member display page, and you can choose to generate a health password.