When we discuss about the Confucianism of the Tang Dynasty in the academic history, we affirm that Han Yu who restored the Confucianism and affirmed the Confucian orthodoxy. We emphasize that Han Yu’s thought was the beginning of the Confucianism in the Song and Ming Dynasty, but we don’t pay attention to the influence of the Confucianism in the Song and Ming Dynasty. Investigating the evaluation of Cheng Zhu and Lu Wang, they affirmed that Han Yu excluded the Buddhism but propagated the Confucianism, and raised the Confucian orthodoxy. Although Cheng Zhu and Lu Wang advocated that we should learn principium fitst, but they affirmed Han Yu’s literature. They also thought that Han Yu valued utilitarian too much, and can’t achieve the inner sageliness and outer kingliness. In the academic history, we emphasize that Han Yu affected the academic development of Song and Ming Dynasty too much. Cheng Zhu and Lu Wang don’t follow Han Yu’s thought, and they thought that Han Yu was short of Wang Tung. They only thought that Han Yu was the important scholar in the Confucianism of the Tang Dynasty, because he continued the Confucianism. They thought that Han Yu paid attention to some philosophical thinking, but was not as good as Chou and Chang in the Northern Song Dynasty. When we discuss that the influence of Han Yu in the Song Dynasty, we must think it again.