On this day, 76 years ago, on February 21, 1949 (January 24, 1949 in the lunar calendar), American psychiatrist and psychoanalytical theorist Sullivan passed away. Sullivan, Harry StackSullivan (1892 - 1949), an American psychiatrist and psychoanalytical theorist, and one of the representatives of the New Psychoanalytic School. His ancestral home is Ireland. Born on February 21, 1892, Norwich, New York, USA, and died on January 14, 1949 in Paris. Received his medical doctor from Chicago Medical School in 1917. Before entering the psychiatry community, he served as a military doctor in World War I and later served in several research institutes, including the Public Health Service Center. He was deeply influenced by the famous neuropsychiatrist W.A. White and devoted himself to the research of schizophrenia. He is also a medical educator and social activist. In memory of White, he founded the White Foundation for the rest of his life, served as president of the Washington School of Psychiatry and editor of the journal Psychiatry to promote his theory of interpersonal relationships. Influenced by contemporary philosophical trends, Sullivan attempted to combine psychiatry with other disciplines such as natural philosophy, anthropology, biology, linguistics and behavioral science. He used his unique methods and the psychological process of interpersonal relationships as the main parameter, to form his new theoretical system of psychoanalysis. He made two major contributions: ¢Ù He believed that schizophrenia was mainly due to the disorder of childhood interpersonal relationships, which caused serious anxiety, which led to the division of experience organization;¢Ú He proposed the concept of self-system, arguing that people are born with the pursuit of satisfaction and security. The need for safety gradually formed a stable personality model in interpersonal relationships. His theory includes some concepts from functionalism, neo-behaviorism and Gestalt psychology, reflecting the typical tendency of eclectic thoughts in capitalist society. Sullivan still actively participated in social activities in his later years and participated in activities of UNESCO and the International Conference on Mental Health. He published only one book during his lifetime: "Introduction to Modern Psychiatry"(1947). Many of his lecture records, notes and manuscripts were successively edited and published by his colleagues, including "Interpersonal Theory of Psychiatry"(1953),"Psychiatric Interview Method"(1964),"A Process of Being a Person: Schizophrenia"(1962),"Integration of Psychiatry and Society"(1964),"Civilian Psychiatry"(1972), etc. Sullivan's theory of interpersonal relationships had a great influence on the new psychoanalytic theory in the United States at that time, and both K. Honey and E. Frome were influenced by him.