This article is about Wang Yang-ming's critiques of Confucianism, Taoism and Buddhism (the three religions), meaning to explain Wang's opinions about the knowledge frameworks of Taoism and Buddhism. Learning the way of the transcendence and Zen Buddhism in early years, Wang established his own framework of Confucianism after his epiphany and never again bothered with the concerns of Taoism and Buddhism, while his opinions about the three religions afterward are worthy of serious investigation. However, the key to his critiques was his own philosophical position, that is, theoretically, Wang's metaphysical position. Yet, rather than a highly metaphysical Confucian, Wang was a successful Confucian in practice. His profound insights and practice justified the Confucian values and worldview; the grounds of his practice converged in the idea of conscience; and the idea of conscience was the benchmark of Wang's metaphysics, the supreme criterion of his metaphysical ideas and the entity of the cosmos. In terms of the philosophical fundamental issues of onto-cosmology, conscience was the entity of the cosmos. Regarding the value consciousness and ontological features of Wang's conscience theory, the writer has already discussed elsewhere. To clarify further Wang's opinions about the three religions, it is necessary to shed light on the onto-cosmological position of his conscience theory. To clarify his onto-cosmology, it is necessary to explicate the position of his Qi-based theory. After addressing the onto-cosmological features of his conscience theory and the position of his Qi-based theory, we will then explain his critiques of Confucianism, Taoism and Buddhism Key Terms: Wang Yang-ming.