Lacan (190 1 ~ 1980) is a French philosopher, psychoanalyst and the main representative of structuralism. 190/kloc-0 was born in Paris on April 3, 2000. He studied at Paris Teachers College and Paris University successively and received his doctorate. After that, he mainly engaged in psychoanalysis teaching and medical work, and organized the French psychoanalysis association in 1953. Based on the methodological principle of structuralism, Lacan advocated "reinterpreting" Freud's theory and put forward the theory of mirror stage. He believes that the activity in the mirror stage is a kind of recognition, that is, the image recognized by people is always the deformation of objects and the image imagined by people. He applied the structuralist method to study the unconscious structure of human beings, thinking that the unconscious structure is similar to language rules, and emphasized that unconsciousness is the communication between the subject and others, including people and the environment. Lacan is the author of Lacan's Collected Works and Four Basic Concepts of Psychoanalysis.