To buy insurance for children, the following types of insurance may be the most suitable: children's medical insurance is the basic guarantee provided by the state for children, which is universal. Accident insurance can provide accidental injuries and accidental medical care, and ensure that children can get timely and adequate medical care when they are injured accidentally. Critical illness insurance can provide financial support when a child is diagnosed with a serious illness and reduce the financial burden on the family. Education fund insurance can provide a certain guarantee for children's future education expenses and ensure that children can receive a good education.