Korean society is on its way to the multicultural society. According to the latest national statistics, the number of multicultural residents in South Korea has reached about 1.5 billion. This is mainly due to the influx of employs by Korea`s changing global status and industrialization. Particularly, rapid increase of marriage immigrants represents the fact that Korea is no longer a homogeneous culture. Multicultural immigrant woman who are married to Korean brings several social concerns, and among them are children`s educational adjustment problem which is the most notable issue. Now, multicultural children`s low level of academic achievement due to their adjustment difficulties has become a national project. At the same time, churches are charged with the mission of evangelizing them to be a member of Kingdom of God and achieve social integration. Children from multicultural family suffers from several problems in academic adjustment due to their low economic status and decreasing desire for learning. By this, they present low level of basic learning, and their difficulties in cultural adjustment caused by language barrier drives them out from their peer group. By this way, these children feel confused in their identity and feel isolated by experiencing social bias which may, in turn, give them distorted view about Korean society. To solve the problems that multicultural societies experience, western countries such as America, Germany, France, and England strive to search various theories on multicultural education, and apply them to the policy. Much to our delight, Korean government had started establishing numerous supporting policies under the goal of social integration. However, care on mental factors which can transform man`s life is crucial for these policies to bring successful results. Researchers have call on churches for this part. The church`s roles I suggest are first, educating Korean language to preschoolers through education in church, second, promote learning through opening afterschool education in church, third, teaching Bible for recovery of selfesteem, and finally mentoring through active utilization of multicultural counsellor. I hope this paper could give an opportunity among Korean churches and church member to firmly recognize coming of multicultural society, and to evangelize multicultural children in the context of social integration and expanding Kingdom of God.