Le Thanh Tong (1442-1497) is a prominent historical figure of our country in the fifteenth century and has a great influences in many ways for later eras. He has intelligence, vision and talent in many fields; His patriotism, love for the people, national awareness and a sense of responsibility in front of giang son xa tac are always the resources for all his activities. With those qualities plus assertiveness, dare to think, dare to do, Le Thanh Tong successfully implemented a comprehensive national reform. Philosophical thought of Le Thanh Tong, especially the thought of having made important contributions to bringing the country out of crisis and developing to the pinnacle of centralized feudalism in the regime feudalism of Vietnam: Le Thanh Tong's point of view on the legal role; Legal contents of Le Thanh Tong; and Le Thanh Tong's point of view on law enforcement. That thought until now is still practical and useful history lessons in the construction of the current state of the Socialist Republic of Vietnam.