實證估計果如下：首先，當國內環境改變有利於吸引外人來臺從事直接投資與股權投資時，臺灣的印刷電路板產業可以直接或間接獲益。其次，利用外資淨流入變數下，當相對環境變動改變不利於臺灣時，若該變動影響及於債權投資，其對國內印刷電路板業的影響最大，其次為直接投資的影響。最後，無論國內環境如何改變，印刷電路板產業對能否取得流動負債的依賴性最高。 This thesis empirically examines the effects of domestic external environmental changes which in turn affect four types of foreign capitals inflow, on the output levels of the printed circuit board industrial in Taiwan. We examine the effects of absolute changes as well as the relative changes in domestic environments. The dependences of running the printed circuit board industry on various accommodations channels are also examined. Our findings are as follow. First, when the domestic environment changes in such a way that is favorable to attract foreign direct investment and stock investment in Taiwan, the domestic printed circuit board industry is benefited directly or indirectly . Second, using the net inflows as the explanatory variables, the estimated results show that whenever there is an unfavorable change in domestic environment that affects the direct investment the adverse effect is the most for the printed circuit board industry. Finally, no matter what happened to the domestic environment, the ability to acquire liquid liability plays the most crucial role in running the printed circuit board industry.