This article summarizes a few main topics of the ecological discourses, and discusses what the ecotheology of the Family Federation for World Peace and Unification (hereafter FFWPU) can deal with them. The main topics are the intrinsic value of nature, the interdependent relationship between human and nature, reconsideration of anthropcentrism, reconsideration of capitalism, reconsideration of science and technology, searching for the ecological metaphysics. The ecotheology of FFWPU provides new persuasive approach to the topics based on the theory of oneness and in the framework of the three great blessings. The ecotheology of FFWPU views that for humanity to resolve the ecological crisis and build a ecological civilization, simultaneously required are turning to an ecological worldview, the change of human beings, and the change of social structure.