Abstract: Daisaku Ikeda believes that human nature is the ability of people to be concerned about of good and evil.On this basis formed his views about the way of living.The way of living includes certain requirements.First，people should adhere to religious values，have indomitable courage to constantly transcend themselves.People also need to keep reading，to be ready to take responsibility and to work with high efficiency.When one has some relations with others he must meet some requirements too：he should treat people equally，to care for others，to keep his promises and to care for the natural environment.The above requirements，the core of Daisaku Ikeda′s ethic theory，are in fact ways of individual improvement and rules one must follow when relating to others.

Key words: Daisaku Ikeda, human, nature, way, ethic theory, the study of being human 