The relevance of the research is determined by the fact that, based on the analysis of the Pilot Book, knowledge about the genesis of ancient Russian family law is expanding, allowing to reveal the historical roots of modern legislation in this area and to identify the influence of cultural, religious and social factors on the formation of norms and principles of family law. The scientific discussion on this issue contributes to a deep understanding of the history of the Russian state and law, the actualization of issues of marriage and family relations in the context of modern challenges and changes in society.The purpose of the study is to reveal the features, conditions and procedure of marriage in Russia.The objectives are to identify the factors influencing the order of marriage, identify obstacles to marriage, and establish the religious and legal basis of marital and family relations.Methodology. The methodological basis is determined by the historical and legal nature of the research, based on the principles of historicism, a systematic approach and objectivity in understanding the legacy of the Pilot Book.Results. In the course of the study, the foundations of family legislation were determined, among them are: the chaste nature of premarital relations, which does not violate the foundations of family values and life in marriage; the definition of marriage as a union of a man and a woman, with the aim of legitimate childbearing and avoiding a sinful life; the consent of both spouses to marry, the absence of obstacles to marriage (kinship, nepotism, etc.); the obligatory wedding of the spouses and the blessing of the priest of the couple; the responsibility of the husband for the wife.Conclusion. In the conditions of modern Russia, the appeal to the historical and legal heritage of the past is dictated by the need to strengthen the authority and support the institution of the family and basic family values. The analysis of the norms of the Steering Book (Nomocanon), which laid the foundations of family legislation, helps to understand the values and principles that have been formed in society over the centuries and influence modern legislation.