Abstract: Compliance was put forward by Mencius, which he equated with self -discipline. On the basis of Confucian kindheartedness, he proposed that man's nature at birth was good with kindheartedness, which had become a complete moral entity, containing self-satisfaction value. He believed that as long as you were compliant, you were likely to become a saint. Compliance opened up mind studies. Compared with Confucianism, compliance placed too much emphasis on morality, ignoring rationality and paying more attention to internality. Zhu and Lu had different opinions about compliance, which reflected the differences of the explanations of classics between Neo-Confucianism and the Mind. Lu Xiangshan developed compliance into simplicity of Yi. The philosophy of the Yangming School inherited it, whose conscience study enriched and improved the theory.