Previous studies on Chao Cuo mostly concentrated on some policy measures, like annexation of dependencies, border defense and attaching importance to agriculture, but in-depth studies which regarded him as “The Thinker” are rare.In more than sixty years after the demise of the Qin Dynasty, various academic schools became active again, and “The New Legalism School” represented by Chao Cuo co-existed and vied with “The New Confucianism” and “The New Taoism”. The new elements of theories in the New Legalism School are embodied in three aspects. Firstly, Chao Cuo’s historical ideas which were affected by the theory of Yin and Yang developed from the “linear evolution” into a cycle historical idea of similar spiral development. Secondly, the political administration objective of fighting for a new country developed into stabilizing the country, thus rendering the people to like the administration. Thirdly, the New Legalism abandoned the “Monarch Supremacy” and returned to the “State Supremacy” of the early Legalism, but it did not abolish the value of the “eagerness of success”.