The family education of the children of floating population has become an important social problem that cannot be ignored at present. This study is based on the survey data of parents of migrant children in Beijing，by establishing multiple linear regression model，focus on the three dimensions “socio-economic status— family factors— self-factors” related to family education，analyze the family education status of floating population children and its influencing factors. The results show that：the social and economic status factors，family factors and their own factors of floating population have significant influence on their children’s education level. The most important factor is family factor，the higher the proportion of education expenditure in the family，the longer parents spend with their children，the more adequate public services are for families to receive education，the higher the level of family education. Therefore，the level of family education of children of floating population is directly affected by the process of family reproduction of floating population. Because floating population families are constrained by structural factors in the process of moving. So，on the support and guarantee of family education for the floating population，the social service supply of family education for floating children should be increased，building the support system of family education，to minimize the negative impact of the social integration of the floating population on the reproduction of intergenerational education.