Abstract
In this paper Iwill discuss about the significance of extension P2M theory by the theoretical approach of economics. First of all,it has been pointed out so far in P2M theoretical studies the necessity of demand-side factors in the theoretical framework, such as 'owner' and so on. It seems to be useful methods of neo-classical economics. Second, it has been pointed out so far in P2M theoretical studies the necessity of time series analysis,such as '3S model' and so on. It seems to be useful economic dynamics method. As an introduction about the extension of P2M theory, Iwill discuss about the implication of figures so called 'patterns of international specialization', based in international economics, theory of international specialization.