Economic marginalization has been a main concern in Taiwan because of the country's imbalanced economic and political relations with China, and its failure to participate in important international organizations. In this paper we link the regional cooperative mechanism to economic marginalization, and establish a model to describe the relationship among China, Taiwan, Japan, and the United States. We analyze whether some possible coalitional options to help stabilize Taiwan's economy exists when it is confronted by a shock. The results are: (1) Taiwan should actively participate in regional cooperative organizations including China; (2) China is unable to ally with the United States or Japan to force Taiwan into the stress of marginalization.