本研究主要先探討國內、外對外投資之相關文獻，再以經濟部統計處於2007年所實施的「製造業對外投資實況調查」問卷資料為分析對象，分別由廠商特性、產業特性及投資特性等3方面，運用probit model進行估計，來分析我國製造業廠商在從事對外投資活動後，對國內產品生產規模所產生的影響。經本研究實證發現，就廠商特性而言，「廠商規模」及「研發支出總額」為影響國內產品生產規模擴大的重要因素。在產業特性方面，則以「產業型態」及「對外投資地區」為重要影響因素，而若以投資特性來看，屬擴張型對外投資動機的「當地市場發展潛力大」、由台灣所提供之「原料進貨來源比率」及「零組件與半成品進貨來源比率」等因素為重要影響因素。 / After reviewing literature on outward foreign direct investment, this research conducts an empirical research based on 2007 statistical data from Ministry of Economic Affairs in Taiwan. We employ probit model to analyze the impacts of outward foreign direct investment on output of manufacturing industry in Taiwan. The empirical results show that the ‘firm size’ and ‘R&D expenditure’ categorized into firm characteristics, and ‘type of industry’ and ‘investment area’ classified into industry characteristics are statistically significant. Moreover, the expansionary FDI measured by ‘high potential of local market’, ‘rate of raw material purchased from Taiwan’ and ‘rate of components and semi-finished product purchased from Taiwan’ are also statistically significant.