本文運用現代經濟學的賽局理論分析中完全動態賽局分析方法，並且將跨國企業投資根據質量特徵劃分爲「環境偏好型」與「政策偏好型」兩類，在完全信息動態賽局下發現地主國般適的政策優惠水平應同投資環境成反比，這說明投資環境的改善將促使外資優惠政策的優惠程度下降對住對外投資中佔主導地位的環境偏好型的跨國企業（如高科技產業而言），外資優惠政策的缺陷是顯而易見的。因此，本文研究結果建議應把工作重點放在改善地主國的投資環境上，具體表現在健全外資法規和制度，加大對基礎設施的投入，進一步推動經濟體制改革，維護公平的市場競爭機制等方面。

This paper adopts dynamic game-theory of modern economics to analyze and divide multinational corporations' FDI patterns by two categories: environmental preferential model, and policy preferential model by the quality and quantity traits of FDI. The preferential level of invested environment is inversely relating to the most advantageous policy of the host country. Meaning, the improvement within invested environment reduces the level of foreign capital premium policy. Evidences were found in the MNC from Hi-tech industry which is highly environmental preferential, and thus the noticeable imperfections in the host country's foreign capital premium policy can be quite obvious. Hence, this paper proposes that improvement should he focused on the overall invested environment in order to induce FDI, such as robust foreign capital legislations and systematic integration, increase the investment of the infrastructures, and further more to promote the reformation of its economic system to embrace a fuller free market competition mechanism.