The article analyzes the scientific work of the famous Slavic scholar, Professor of the Charles University in Prague Jozef Shusta (1874–1945) on the history of Czech lands during the reign of the last Przemyśloviches family. He was a student of the famous Czech medievalist Jaroslav Gall. In his numerous studies, J. Shusta paid considerable attention to the study of history of the Czech kingdom during the reign of the last Przemysloviches and the first Luxemburgers, to the study and publication of sources on the problems of the Reformation and Counter-Reformation, and so on. The scholar wrote several generalizing works on the history of Europe in the New Age, and was also the editor-in-chief of the popular science series “History of Mankind”. Research by Shusta has not lost its relevance to this day.