Value and evaluation, which concern the orientation of human's life and spirit, arise from the dual relations between life and death, body and mind, community and individual, and so on. They manifested to be the relationship between "being" and "Nothingness", "the real" and "the unreal" in the history of philosophy. Thus, "value" and "evaluation" are by no means merely categories of axiology, but also of ontology. In the past, thinkers had put forward theories (which are differential related in the West and China) concerning these categories. As modern values come to be dominant in modern times, the west is facing up to "get rid of God", and China is facing up to the questions that whether it should be, and how to "get rid of parents". Nihilism is only a temporary transitional phenomenon, the tasks that modern researches of axiology should undertake are to build reasonable and proper relationship between "being" and "nothingness", "the real" and "the unreal".