This report provides a detailed examination of the significant contributions made by Pitirim Aleksandrovich Sorokin to the field of sociology. Sorokin, a prominent figure in 20th-century sociological thought, significantly influenced the development of social sciences. The research explores Sorokin's major theoretical frameworks, including social and cultural dynamics, social stratification, and the sociology of revolution. An analysis of his key works, such as "Social and Cultural Dynamics" and "Man and Society in Calamity", will be provided.