Learning theory is mainly divided into two theoretical systems: learning theory mainly includes behaviorism learning theory, cognitive learning theory, constructivist learning theory and humanistic learning theory. Behaviorism: Learning is regarded as the establishment of the connection between stimulus and response (S-R), and it is a trial and error process. The representatives are Thorndike and Skinner. Cognitive theory: Learning is an understanding or epiphany of situations and a change of cognitive structure. Since the late 1960s, the two theoretical systems have tended to be close. For example, Gagne's cumulative learning theory and Bandura's social learning theory are considered to contain these two theories.