本文主要係以歷史的研究途徑，並偏重於實際政治運作中的動態觀察，來詮釋憲改過程中將總統改為直選，對我國歷次修憲所具有的意義。基此，本文認為，總統的改為直選，實為將憲政體制「遠離」憲法原有設計所預作之鋪陳，甚至於，整個憲政改革過程即是以擴增總統權力為核心之憲政體制調整的過程。 另外尚需注意的是，即使透過修憲來賦予總統更明確的憲法權力，但其實際的意義，只不過是為總統制運作之實質而擦脂抹粉罷了。諸如這些歷史性的評價，在本文中將從總統直選與憲政體制的選擇，以及總統選舉的當選應採相對多數決或絕對多數決等的討論中，一一予以呈現與敘述。

　　　　　This research mainly adopts the historical approach with emphasis on the dynamic observation in real politics to interpret the meaning of several amending processes of Constitution in R.O.C.. In the said process, the presidential election has been changed from indirectly to directly. This research points out that the change is indeed 'deviate' from the original spirit of the Constitution. Moreover, the constitutional reform is to revise the constitutional system that is based on the expansion of presidential power. Besides, it seems that amending the constitution would grant more political power to the president. However, it is more likely a kind of coverage that is to hide the reality of presidential system operations in reality. This paper will discuss on the historical evaluations through choices of direct presidential election and constitutional system, as well as the electoral system that the presidential elections should adopt, namely, plurality vote or majority vote.