The educational equity of undergraduate enrollment opportunities has always been a public concern today. There are a diversity of individual factors impacting on Chinese students undergraduate enrollment opportunities, including SES(socio economic status), parent educational level, parent educational participation, ethnic minorities and so forth. Through the correlation analysis of CFPS data, such as regression analysis, how these factors affect college admission opportunities has been deeply explored and discussed in this paper. The data includes 5055 samples, which can represent the characteristics and situations of Chinese family education to a certain extent. The results show that family SES is generally recognized as a key factor, and parents participation could help disadvantaged students promote academic performance. Furthermore, ethnic minorities and gender have a impact on the undergraduate enrollment opportunity.