在國際關係理論中，以主權國家為前提，以理性選擇為途徑，這種採用國家是單一理性行為體的假設，在解釋國際合作與否時，已經面臨到一些挑戰，換言之，非國家行為體亦扮演重要角色。另外，由新現實主義和新自由主義共同假定的制度結構，在日趨複雜的現實世界中，也不能完全理解真實國際社會合作發生的原因。因此，本文嘗試引用認知理論，藉共同認知變項的提出，並結合共同利益變項，透過整合制度結構和認知轉化的過程，導出一種國際合作框架。在驗證部份，本文採用賽局理論和列舉實際案例，說明制度結構和認知轉化如何對國際合作與否產生影響，並同時檢驗本文國際合作框架的有效性。

In international relations, some theories explain international cooperation almost solely based on sovereign states and a presumed approach of rational choice. However, these hypotheses assume a state-actor, as a rational unit, will meet some unforeseen challenges, thus we need a non-state actor as another variable. Furthermore, an institutional structure of neo- realism’s and neo-liberalism’s hypothesis do not fully illustrate how international cooperation occurs in the real world. So we adopt both the cognitive theory and game theory approach, choosing common interests and common cognition as independent variables, and integrating a process of institutional structure and cognitive transformation to construct a framework revealing the evolution of international cooperation. Finally, we must apply the logic of game theory in a case study to prove how international cooperation is affected by institutional structure and cognitive transformation, as well as to demonstrate the effectiveness of this new framework.