(summary) This paper begin with short history of Avicenna`s life, about his famous medical works. It draws his medical discoveries. In this paper was illustrated his psychological and medical thoughts, and was given some references from his two books, which are the most important primary source in the history of medicine. It is noteworthy that some authoritative scientist’s point of view the secret of Avicenna`s success is that he combined religion, philosophy and medicine.
