The purpose of the article was to formulate a general problem and clarify the hypothesis of research on the design of a humanitarian quantorium as a technological digital environment for the formation of teacher competencies in the subject areas “History” and “Social Sciences”, to determine the set and content of teacher competencies in the field of applying humanitarian education technologies. The leading research methods described in this article were the method of foresight design, the method of expert panels and methods for the diagnostic study of occupational deficiencies. The materials presented in the article contain a description of the results of a pilot study on identifying professional deficiencies of a history and social science teacher, a generalized, refined set and content of the future teacher’s competencies in the field of applying humanitarian education technologies in a digital environment, a conceptual rationale for equipping a humanitarian quantorium as a technological environment for the formation of teacher competencies. In the substantiation, an integrated approach was applied, which allows to combine the content of humanitarian education, teaching technologies and digital means into a single innovative didactic space. The conclusions are drawn to the peculiarities of the application of the humanitarian quantorium model in the wide practice of professional training of history and social studies teachers for the implementation of the developmental capabilities of the subjects of the humanitarian cycle and improving the quality of humanitarian education.