The regular senior secondary schools in China has been divided into three forms, including public senior secondary school, publicly subsidized private senior secondary school and private senior secondary school. In order to clarify the differences among regular senior secondary schools, this paper not only tried to analyze the public senior secondary school that could be separated into important school and common school but also analize the administrative forms that could be classified into seven types. The differences of material resources in regular senior secondary schools were disclosed by an analysis on the forms of establishment and administration. And to manifest the cause of such intervals this paper also had a view on the important school systems. From the analysis, the educational environments of the important public senior secondary schools and publicly subsidized private senior secondary schools are the best. And especially the facilities in the province-prioritized important regular senior secondary schools have been enriched greatly for the reason of receiving more school fees from the students. It is to say the increasing entrance of students made the educational environment better. And because of the enrichment of educational environment the rate of university entrance becoming higher. But if the educational funds could not be ensured the educational environment would be another side. And actually the situation could be reproduced if only the riches invest to those important senior secondary schools. In my view, the differences of educational environment will be enlarged in the Chinese regular senior secondary schools.