The collection gives an idea of ​ ​ the basic concepts of Russian and Soviet historical science on the introduction of Christianity in Russia. The introductory article characterizes the general state of science on this issue. The appendix includes excerpts from Old Russian annals and extra-descriptive, as well as foreign sources related to the "baptism of Russia." Designed for the scientific community, party workers, propagandists and everyone interested in the history of our Motherland.