On June 3–4, 2022, the All-Russian Scientific and Practical Conference “Criminal Legislation: Yesterday, Today, Tomorrow” was held at St. Petersburg University of the Ministry of Internal Affairs of Russia, dedicated to topical issues of the state of criminal legislation, the practice of its application and the science of criminal law at the present stage. The conference was attended by 105 authors from 31 scientific and educational organizations, 29 Doctors of Law, 51 Candidates of Law, 8 employees of practical law enforcement bodies of the Russian Federation. At the plenary meeting held on June 3, 2022 there was a discussion of the current state of the fundamental categories of criminal law, such as crime and its signs, corpus delicti and individual elements of a crime, release from criminal liability, problems of digitalization of crime, criminal law protection of Russia’s fiscal interests in foreign economic activity; signs of a crime in the practice of constitutional proceedings, approaches to the study of foreign experience in the legislative regulation of necessary defense, and others. During the work of the sections on June 4, 2022, the problems of applying certain norms of the Special Part of Criminal Law were discussed; prospective directions for improving criminal legislation and law enforcement practice were considered.