自由主義國際關係理論在西方學界發展至今，已在位居主流國際關係理論的地位上，呈現出多家之言。本研究首先即將進一步回顧與梳理自由主義國際關係理論，俾使國內學界對於自由主義之國際關係理論可以有更深入之認識。由這些回顧似乎可以看出，國際關係理論之自由主義發展至今，已經有了許多不同的主張，似乎已到了必須要重新梳理檢視的時候。其次，本研究將分析自由主義國際關係理論的發展，並為該陣營裡面的各種不同論點進行對話與建橋的工作。相較於國內學者以對於建構主義國際關係理論引介了建橋計畫，本研究即試圖探詢自由主義國際關係理論之核心要素，試探自由主義國際關係理論本身建橋計畫的可能性。除分析民主和平論、國際制度、及貿易與和平之關係外，也將探討古典自由主義學者對於自由主義國際關係理論之看法。第三，理論不應獨居於現實之外，而應當幫助我們了解現實世界，故本研究亦將討論國際關係理論對於解釋及預測國際現勢之適用性的問題。如上所述，國際關係理論之發展與國際情勢息息相關，而自由主義理論亦復如此。本研究將以西方學界的相關討論為主，並評量該理論對於我們了解及預測國際現勢發展之能力。 Liberalism constitutes a significant part in contemporary International Relations (IR) theory. However, as an umbrella term, there are various strands within this camp of the so-called liberalism. This research aims to explore and introduce the content as well as core assumptions of liberalism in IR theory to Taiwan’s academia. To achieve this goal of introducing liberalism to the academia in Taiwan, this research will concentrate on contemporary issues explored by the liberal theorists in the western academia. In addition, this research will explore the possibility to bridge these various strands in the liberal camp for Taiwan’s academia, as certain Taiwanese scholars did for constructivism recently. Therefore, issues regarding democracy, international organization, and trade, and how they affect state behavior are central to this research. More importantly, while some scholars maintain that these factors exert causal impact on world peace, others contend that these factors may at best correlate with the lack of war among selected states. This research will scrutinize these different strands of liberalism in IR theory, and recap their common ground as a response to the criticism from classical liberalism in political philosophy. Last but not least, this study will help us generate new research agenda to explain as well as understand current affairs. Democracy promotion, global governance, and economic interdependence have trumped other issues and become the new liberal agenda in IR studies. My research will suggest these agendas help to predict the new developments in world affairs.