With the development of economy and urbanization of China, huge rural population move into cities, among which the scale of family migration grows constantly and the number of migrant children also grows constantly in the meantime. The corresponding problem result from this is the growing of the number of poor migrant children in public schools in cities. Due to the restriction of household registration system and related policy, the parents of these poor migrant children are unable to access to public services after they move into cities in the destination localities. Their educationallevelas a whole is generally low, they don’t have stable occupation and the better economic strength to satisfy the needs of poor migrant children in educational and cultural consumptions.In facing these poor migrant children who are living in the family back ground of deficient economic capital and cultural capital, public schools should build platforms for them to share educational resources and to narrow the gap of their family economic capital and cultural capital with families of those non-migrant children.