This article investigates the historical development of the investment of China' s rural compulsory education system, which is divided into three stages. Based on the attributes of public goods, the development of rural compulsory education is subdivided into five different periods, and careful examination finds that the investment system has undergone a long rational return by two steps: the first is a natural return following the route of "long-term development of private goods attribute to relaxation of private goods attribute to low-leve...