Abstract: The western rationality is universal rationality about the transcendental world. It provides people with a logical world that has the external law become the main means of society running. But the moral,based on universal rationality, is absolute one, and people can not use it to control social action. The confucian rationality is experience-valued rationality that is about experience world but not universal logical world. It is a various and relative rationality. Because of lacking logic, the external law-control can not be set up; and because of its variety and relativity, the experience and various moral that can be better used to control social action can be set up. To run the country by combining the rules of variety and universality, and the combination of value and truth,the rationality on the basis of practice of Marxism is take of this rationality. There is duality in rationality of practice, and it can run the country by combining the rules of law and the rules of virtues.