Machiavelli further modified original moral principle by bestowing the virtue vocabulary with new connotation, used the virtue to dominate his policies in political field, realized great reform of ethic and moral outlook in Europe, reset the validity basis for political power, asserted that political moral capacity is the basis of political legitimation while violent methods are exceptional resolution behavior to consolidate the political power and that the masses are effective force for political ruling and anticorruption, whose ideas are of important reference significance to build a clean government with strong strength and to realize democracy and legal management of the socialism with Chinese characteristics.