Abstract: The subject of this research is examination of the causes for the emergence of the contractual structure for the supply of goods, as well as the evolution of the development of legal regulation mechanism of the supply agreements in the Russian Empire, Soviet Union, and modern Russia. The study of the supply agreement is conducted in its relation to the purchase and sale agreement. The relevance of this research is substantiated by the importance of knowing the peculiarities of regulation of civil law framework of the supply agreement and the need for systematization of views upon the development of legal regulation mechanism of the supply agreement in different periods and political systems in Russia, thereby dividing all periods of legal regulation of the supply agreement into several stages. The author underlines the importance of comparative analysis of the purchase and sale agreement with the supply agreement throughout the entire time of their coexistence. The author systematizes the information on the development of legal regulation mechanism of the supply agreement; offers the original classification of its evolution consisting of several stages: prerevolutionary, Soviet, and modern; substantiates the formulated conclusions; analyzes the interrelation between the purchase and sale agreement and the supply agreement, as well as their role during each of the highlighted stated of evolution of the legal regulation mechanism of the supply agreement. The article also analyzes the peculiarities of the purchase and sale agreements within the framework of each period under review; determines the status of the purchase and sale agreement, and the degree of its autonomy.