"If The World Becomes Different, The Things Will Be Different, If Things Become Different,Then Prepare Should Be Changed"

Han fei zi as a master of the pre-qin thought, learning and inheriting predecessors’ good ideas, and at the same time based on the actual social reality of the Spring and Autumn and Warring states under the characteristics of social confound, having the same political consensus with Pre-qin scholars, which the political goals means "For the people, for the world" and the common political idea means pursuing "a vast orderly world"."If the world will be different, the things difference, if things become difference, then prepare should be changed", it is the basic thought for salvation, and with the strong realistic spirit, he values the maneuverability and the reality of political thought in the specific political practice process. Through the careful observation and analysis on the present age, Han fei zi established the systematic political theory system, not only can be accepted by the power and put it into practice, but also combine with the political practice fastly and effectively, then putting an end to the violence and social disorder, the establishment of the mong empire qin become the practice achievement of the political thought of Han fei zi. At the social status that" Etiquette collapse " and "the Confucian failure", Han fei zi choose to governing the country with law and moral, this political measures which combines law, method and power, and it appears more rationality, and can more quickly establish a uniform code of conduct and stable social order, to a certain extent it overed the confound social status of the Spring and Autumn and Warring states, and in some degree it also provide the possibility to achieve the contemporary scholars’s political ideas. To establish a stable and orderly unified regime, the political goals of "For the people, for the world", and the common political idea to pursuit " a vast orderly world" may become true. It is also the reason that this paper discusses the rationality of the political thought of Han fei zi.