Prepare the household registration books of yourself and your children, and follow the steps below to apply for the electronic medical insurance voucher. 1. Search the "National Medical Insurance Service Platform" APP in the mobile application mall, download and install it. 2. First activate the parent’s medical insurance account and click to log in to enter “real-name authentication”. 3. After entering the login interface, those who have an account can directly enter the account number to log in (you can choose to log in with Alipay), and those who do not have an account can choose to register immediately. 4. After completing the activation, return to the home page and click "Family Account". 5. After reading the notice, select Read and Agree. 6. Enter the personnel information that needs to be added. After uploading the household registration photo, you can click to automatically generate a "Personal Commitment Letter" and submit it after completing the electronic signature. 7. After confirming that the information and materials are correct, you can click to add an account. 8. Click on the family account on the homepage to see the electronic medical insurance voucher of the "family member".