To provide medical insurance for the elderly, electronic certificate should be handled on the national medical insurance service platform. First download and install the "National Medical Insurance Service Platform" in the mobile phone application market search app. After logging in, click on the bottom menu to enter the personal center page, and make a real-life demonstration according to the prompts. My family member interface will be displayed after authentication. Click the icon+add a family account in this section, and then bind the account with the ID number.