近年來雙邊甚或區域間簽訂自由貿易協定之風盛行，本文欲探討其影響。參考Caliendo and Parro(2015)的方法，以考慮部門異質性、投入產出連結以及中間財貿易之模型，計算1995-2013年間三個模型的福利效果。旨在分別檢視1995-2005年間WTO成立十年之影響、2005-2013年間全球120份自由貿易協定生效之效果，以及韓國此段期間內簽訂自由貿易協定之成果。本文結果顯示，WTO於1995年成立至其後10年間，確實為會員國帶來正面影響，總體而言，多數國家福利效果變動率為正。到了2005-2013年，全球有120份區域貿易協定生效，亦提升多數國家的福利，然成長幅度不如1995-2005來的顯著。惟韓國受惠於其簽訂自由貿易協定的成效，福利成長得與先前維持相近水準。此外，透過不同模型間的比較，本文發現各模型間的福利效果有明顯差異，顯示現今複雜的國際分工鏈下，完善考量部門間的互動因素實為衡量國際貿易效果的重要課題。

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