Electronic medical insurance certificate is an important part of the national unified medical insurance information platform, and it is the only identity certificate for online medical insurance business, which is completely applicable to all medical insurance businesses. Electronic social security card is an effective electronic certificate for social security card online application, which corresponds to entity social security card one by one and is uniformly distributed and managed by the national social security card service platform. So electronic social security and medical insurance are different in electronic certificate. There are many kinds of electronic social security, including pension, employment, work injury and unemployment. Medical insurance only applies to medical reimbursement.