Education fairness is an extension of social fairness, and it has an important influence on subject education and students' overall development. Based on the three aspects of the equity of education starting point, the fairness of educational process and educational results, this paper discusses the present situation of educational equity research. According to the historical process of education fairness, combined with flipped classroom research, we propose to pay attention to "marginal"groups from the perspective of educational equity, and try to analyze the causes of "marginal"groups in flipping classrooms, and discuss how to intervene in the flipping classroom from theperspective of educational equity. We are committed to improving the learning status of "marginal groups"in flipped classroom.