Legal analysis: children can buy social security. Their parents or heads of households can apply to the local social security agencies to buy medical insurance for them according to law. If the child has gone to school, his school can purchase medical insurance for the students in a unified way and hand over the purchase documents to his parents and other guardians. Social security can be paid by individuals or units. In the name of an individual, only the endowment insurance and medical insurance in social security can be paid, and through the unit payment, the expenses of pension, medical care, work injury, unemployment and maternity can be paid. If you buy social security in your own name, bring relevant documents to the Social Security Bureau. If you find a company to pay social security, your personal expenses will be higher. 1. Children in kindergartens can participate in children's medical insurance through kindergartens, which generally meets the policy requirements and pays less. If it does not meet the policy requirements, the guardian can pay in full at his own expense. 2, can also be handled in the community street office. About forty-five yuan a year. 3. You can also buy it at school. For preschool children with urban household registration in this city, the applicable medical insurance is the basic medical insurance for urban residents. The specific provisions are as follows: (1) Full-time students (hereinafter referred to as students) who are enrolled in public or private primary and secondary schools, various institutions of higher learning, secondary vocational and technical schools and technical schools in this city (1). Among them, urban household registration students in non-municipal medical insurance co-ordination areas must have corresponding official student status. (2) Urban registered residents:/kloc-preschool children under the age of 0/8 and other non-school personnel (hereinafter referred to as minors). Men over 18 years old, women over 18 years old, non-school staff under 55 years old over 60 years old, women over 55 years old, can not enjoy the basic old-age insurance benefits on a monthly basis.

Legal basis: People's Republic of China (PRC) Social Insurance Law.

Article 57 An employing unit shall, within 30 days from the date of its establishment, apply to the local social insurance agency for social insurance registration with its business license, registration certificate or unit seal. The social insurance agency shall, within fifteen days from the date of receiving the application, examine and issue the social insurance registration certificate.

Article 58 An employing unit shall, within 30 days from the date of employment, apply to the social insurance agency for social insurance registration for its employees. If the social insurance has not been registered, the social insurance agency shall verify the social insurance premium it should pay. Employees-free individual industrial and commercial households who voluntarily participate in social insurance, part-time employees who do not participate in social insurance in the employing unit and other flexible employees shall apply to the social insurance agency for social insurance registration. The state establishes a national unified personal social security number. Personal social security number is a citizen's identity number.