Scientific conceptions developed by B.D. Parygin, and main results of his numerous researches in the sphere of social psychology as well as the most significant theoretical innovations and developed psychological conceptions and models proposed by him are covered in the article. Peculiarities of scientist's scientific style and history of his activity are described. The meaning and role of works of B.D. Parygin for domestic and world's social psychology are shown. The analysis of his scientific conceptions is conducted in the main subject areas of scientist's creative activity. General theory and methodology of social psychology, socio-psychological states, social psychology of personality and psychology of communication are the areas.