Piaget's game theory of cognitive development Piaget pioneered a new way to incorporate games into individual cognitive development. He believes that cognitive development affects children's play behavior, so play behavior is an indicator to understand children's cognitive development. Piaget divided the game into corresponding stages according to different levels of children's cognitive development. In the perceptual movement stage of 1, children's games are characterized by repetitive actions or activities, which is called the practical game stage. In the pre-operation stage, children's games have gone beyond the present scope, breaking through the limitation of time and space, showing as a symbolic game, that is, using body double to make imaginary games, children can change reality and meet their emotional needs through symbolic objects. 3, the specific operation stage to the specific operation stage, the rules of the game began to develop. Piaget believes that babies occasionally get pleasure from games, so game behaviors appear constantly. In 1960s and 1970s, post-piagetian school's game theory, game awakening theory and game meta-communication theory appeared. The post Piaget theory is characterized by discussing the physiological mechanism of games and the influence of environment. Some of them think that human beings are driven by society and need to constantly participate in information processing activities. The central nervous system of individuals always maintains and pursues the best level of awakening by controlling the stimulus input of the environment.