Abstract:It is commonly acknowledged that the multiple realization is a crucial argument for nonreductive physicalism in contemporary philosophy of mind. The investigations of its theoretical implications inevitably probe into the ontology of property, especially its underpinning mechanism of causal powers. After the preliminary analyses of Fodor and Kim's appreciation of multiple realization, this paper tries to give a proper explication of the concept of realization. At last, by virtue of the assessment of Shoemaker's subset view of realization, I try to show a huge tension rooted in the causal powers mechanism of realization. This leads to the conclusion that realization just states the mind-body problem-it is not a solution to it.