With the growth of international trade, international marriages are also rapidly increasing in Japan. The present study is divided into three parts. The first part gives a statement of the development and phenomenon of the international marriages in recent years and analyzes the reasons for appearance of the phenomenon within international marriages. In the second part, the various problems related to international marriage, such as divorce, cross-cultural conflicts, and quality of couple relationships, have been discussed. Finally, we take into consideration which kinds of the assistance and support from the surroundings are necessary for the international families, and which kinds of help are available under current situation in Japan.