Children's medical insurance card has limitations in use, low security and wide coverage. In the process of children's growth, the expenditure of medical expenses is also increasing. It is suggested that parents and friends can choose suitable commercial children's insurance according to their own economic conditions to supplement the shortage of medical insurance. According to national regulations, as long as parents don't abandon their children with serious diseases, they can have certain subsidy policies on a regular basis, and those medical expenses also have certain relief measures.