Resolving problems in accordance with globalization and the migration of international population is important key for proceeding of the successful social integration policy. A matter of foreigners in Korean society just does not play much of a role at the governmental level compared to other social issues. But the fact is that the social integration policy of foreigners into Korean society is loomed slowly in current issues since the recent upsurge in foreigners is populated largely compared to the past. The purposes of this study represent to bring in problems and solutions in which multicultural families are facing; by looking present condition of Korean multicultural policy for social integration in multicultural society; through Multicultural Families Support Act of which suggest comprehensive direction of multicultural policy. As a result of this study, multicultural policy for social integration in Korea shall not be viewed in terms of Korean ethnicity which tendsto be traditional and closed-minded, even though there has been increase of foreigners and changes of international environment. Also this study shows that there has not been coherent policy for government to deal with foreigners in Korea. Furthermore, it is revealed that there are still problems left to be improved in the future such as choice of priority bidder, content and scope, and degree for the social integration. Therefore, study and discussion of problems and solutions for the social integration policy fall into three categories as level of the law and the regime, system of exclusive responsibility, and system of supporting for multicultural policy and program. Key words : Multicultural family. Multicultural society. the social intergration policy. Multicultural policy. Multicultural Family Support Act.