Abstract: As everyone known, Chomsky is a famous linguist and public intellectual, but his identity as a cognitive psychologist has rarely been perceived. In fact, the philosophical and linguistic theories of Chomsky have largely contributed to the birth and development of cognitive psychology. Chomsky's radical critique of behavioral psychology promotes the birth of the first cognitive revolution and cognitive psychology, and he is the leader of the first cognitive revolution. In the method of psychology research, he praised highly rationalism which has become an important theoretical source of cognitive psychology, and at the aspect of theory, he created the transformational-generative grammar which provides relatively ideal approach to interpret the information in the human mind and language skills for children. As the leader of the first cognitive revolution, has made an indelible contribution to the birth and development of cognitive psychology.

Key words: Chomsky, cognitive psychology, contribution