本文實證探索1991年到2009年間,國際資本移入對臺灣石化產業競爭力的影響。利用實質匯率概念所計得的臺灣石化產業競爭力指標的迴歸方程式估計結果顯示,外人來臺股權投資對於提升競爭力有顯著的正面影響。利用標準化變數所估計的結果顯示,影響程度最大者為外人來臺直接投資,其次為外人來臺證券投資─股權。 This thesis empirically explores the effects of the four types of international capital inflows on the competitiveness of the petrochemical industry in Taiwan during the period between 1991 and 2009. Adopting the concept of real exchange rate as proxy for the competitiveness index, regression analysis has shown that Foreign Equity Investment has brought about significant positive effects. Regression analysis using standardized variables reveals that the magnitudes of the effects of the four types capital inflows vary whereas the Foreign Direct Investment plays the most important role while the Foreign Securities Investment- Equity is the second.