Empirical study results show that in the past 30 years, after slightly expanding in the early 1990s, the differences in overall higher education opportunities among the children of all strata of China have continually shrunk. Regarding different types of higher education opportunities, the differences in access to key universities first expanded, then shrunk; the differences in going to ordinary baccalaureate higher education institutions (HEIs) and associates HEIs have continually shrunk since 1982. To a certain degree, the study results verify the MMI and MEI theories. Various intervention measures should be used in the future to increase the quality of ordinary baccalaureate HEIs and associates HEIs, and further equalize the access to higher education for children from all social strata. [Translated by Jeff Keller.]