The increasing number of divorces between international couples, especially between foreign wives and Korean husbands, has drawn attention to the relationships and divorces of multi-cultural families. With continuously increasing international marriages, the problems faced also increase, which causes instability in international families. Rapid industrialization has also increased instability in international families damaged family relationships by bringing life diversity and changing values. Therefore, healthy family relationships has become a social topic and this is what we, who have just became a multi-cultural society, should focus on to build up strong, healthy family relationships. Accordingly, this research found the threats to healthy multi-cultural family relationships, and provides some solutions through welfare management of multi-cultural families that improve multi-cultural family relationships. Welfare Management can bring a stable society, healthy culture, and ultimately, social integration. Welfare management for multi-cultural family relationships are: First, the ability of the female marriage immigrants to speak Korean has a huge effect on the health of the family relationship, and it shows that awareness of conversation in multi-cultural families must be changed. Second, the ability to overcome culture shock or conflict while they settle in Korea is needed. Culture shock or conflict disturbs social integration and also causes individual crisis. Some immigrants come to Korea with limited or skewed information about Korean society. This leads to culture shock and conflict. Economical problems, childbearing problems, cultural differences, poor relationships with in-laws, language barriers, bias, discrimination, and personality differences are also factors that cause conflict. Generally, rational thoughts can deal with these conflicts. Third, multi-cultural family relationships need to be managed by a social support network. Social support is a continual interacted social aggregate between individuals or between an individual and a group. This social support increases mental stability and provides guidelines, so that feed-back can be given on identity crisis. Support programs that build a network based on mutual dependence and the mutual exchange of financial and institutional information must be developed. Fourth, human resource development welfare management that helps female immigrants find jobs should be developed. Almost half of multi-cultural family members think about establishing small businesses having to do with their culture. It is important to find capable immigrants who are interested in cultural diversity and provide education and job training to them, so they can deal with unemployment and also raise their value as members of Korean society. This research is limited to literature.