Legal analysis: Children’s electronic medical insurance vouchers can be opened through the “Family Account” of the National Medical Insurance APP. At present, medical insurance electronic vouchers can be activated and bound through multiple channels such as the National Medical Insurance APP, WeChat, Alipay, and bank APPs. However, the "family account" can only be set up by downloading the National Medical Insurance Service Platform APP. To enter the homepage of the National Medical Insurance Service Platform APP, you need to log in to your personal medical insurance electronic voucher. When you enter the login page for the first time, there are two methods: account login and electronic voucher login. After completing the login, click My on the bottom menu bar to enter the personal center page, and click the icon "+" in the My Family Members section to add a family account. Please read the "Notice of Adding Family Members" carefully and click the "I have read and agree" button to enter the family member information filling page after confirming that it is correct. Upload materials and add members. If the family members you add are less than 16 years old, just click the Add Account button to complete the account association. If the family member you add is older than 16 years old, after clicking the Add Account button, please choose the "face verification" method to complete the family member verification. Therefore, the bound family member needs to be with you during this operation.

Legal basis: "Notice on Comprehensively Carrying out the Application of Electronic Social Security Cards" (Human Social Security Department [2019] No. 45) 2. Work objectives and basic principles (2) Basic principles: First, unified distribution Combined with *** construction. The country will uniformly formulate electronic social security card technology, management and open service standards. The national social security card service platform will be built at the ministerial level, interconnected with the human resources and social security business systems at all levels through the financial insurance project business dedicated network, and establish a general interface with relevant financial institutions and social service institutions as needed. Local human resources and social security departments at all levels build local application platforms, develop online applications, and realize national online linkage services. The second is the integration of online and offline. The online and offline application system, service system and management system of social security cards are organically integrated to adapt to the diversified card usage needs of different groups of people and multi-level business scenarios. Cardholders can choose to use physical social security cards or electronic social security cards based on application scenarios and personal preferences, and achieve online and offline collaboration through online card use, offline card use, and online and offline combined card use. Third, service channels are diverse. Make full use of the ability to reach users through various channels to create an efficient, convenient and safe service model for electronic social security cards, supporting cardholders through multiple channels such as human resources and social security department APPs, government service APPs, cooperative bank APPs, and standardized social and livelihood service APPs. Apply for an electronic social security card and enjoy electronic social security card services through multiple channels. Fourth, information security is traceable. Based on the social security card security system, we will improve the security mechanism of electronic social security cards, standardize the online card business process, strengthen the security management of the entire data life cycle, and achieve trusted and secure access to online business, access security management, application risk prevention and control, and security reliability. Traceability ensures the security of personal data, online business security and financial transaction security.