The chapter deals with such a difficult phenomenon as Islamic family studies according to the legal issues. Since in Islam marriage is considered sacred, and the family is indestructible, the sanctity of ties between a man and a woman is protected, and the joint life of a man and a woman without marriage is not allowed. The family is considered the main social unit of society, and all relationships, values, and traditions in a given society are associated to some extent with the family. The family is a sacred fortress, contributing to the formation of the younger generation, and has an important place in the society, since its foundation has been of great importance.