Zhangzai’s philosophy is a precious property of civilization of China and the world. His theory affected not only the development of Chinese Confucianism , but also the development of Korean Confucianism through generations of Korean Confucianism scholars’ absorption and transfer. In accepting and absorbing Zhangzai's philosophy being represented of 'Wei Qi lun', or the energy about origin of nature, Korean Confucianists tried to form Chinese Confucianism in the concrete, properly to Korea. So Korean Confucianism is not a reappearance of Chinese Confucianism, is peculiar to Korea. Naturally, each Confucianist 's idea and theory is not always simple, containing rich and deep contents. So I tried to analysis Korean Confucianism entirely to study about the influence of Zhangzai's ideology on Korean Confucianism.