May Day is a deeply international, popular, massive and beloved holiday of solidarity of all workers, which has a centuries-old tradition. This holiday is really popular, uniting and uniting all fighters for peace and workers' rights. In the book of the candidate of historical sciences I.P. Rakhmanova in journalistic form tells about the birth of May Day, a vivid panorama of his celebration is recreated both in our country and in many countries of the world - from the first May Day to the present day.