The modern development of Russian society is characterized by the intensive growth of the advertising industry, which is becoming an integral part of economic relations and the daily life of citizens. Advertising today goes far beyond the traditional forms of commercial promotion of goods and services, turning into a complex system of information impact on consumers. In turn, advertising legal relations have a special status in the system of civil law relations, since they are characterized by the multiplicity and difference in the status of the subject, a special complex object of these legal relations, as well as the specifics of their content. The authors analyzed advertising legal relations from the standpoint of the doctrine of civil science, proposed the definition of advertising as an object of legal relations, as well as the definition of the concept of «advertising legal relations».