with the implementation of policies such as “strictly controlling the population scale of mega cities”，the entry threshold for the children of migrant workers has been raised，and it has become a difficult problem to study in other places. Affected by many factors，some migrant workers choose to settle in cities around Beijing，so as to solve the dilemma of college entrance examination in other places. Through the empirical investigation of six families of migrant children，this study found that the motivation of family education choice of migrant children mainly includes six aspects：lack of social capital in hometown，accumulation of urban social capital，difficult to give up parent-child separation，reliance on education resources around Beijing，parental education worship and children’s willingness to further study. Among many factors，the children’s willingness to further study and the father’s social capital are the key factors leading to the expectation of family education.