This study purpose to suggest how to improve the system of child care to defend children's rights. For this purpose, the International Covenant on Economic, Social and Cultural Rights, International Covenant on Civil and Political Rights, and Convention on the Rights of the Children are analyzed and three suggestions are proposed. The results are as follows as, First, the child care does not use as the material for the family or country but purpose to defend the children‘s rights that they should develop for self-perfection. Second, the government should define the conception of children's rights that we should defend at first. Third, the law and the policy should be revised by the new conception of children's rights.