自不信任案制度於1997年第四次修憲至今（2014年）已十六年有餘，對於其施行成效實有必要予以檢視。然觀我國政黨政治運作之實務及現時兩黨瓜分政治勢力之趨勢，是否影響倒閣制度於我國施行有所障礙。本文擬從不信任投票 （倒閣）制度源起與意涵及我國不信任投票制度沿革與程序之介紹。再觀察我國現實之政治環境狀況並分析台灣自第四次修憲引進不信任投票制度後兩次倒閣失敗案例，以之探究不信任投票制度於我國政治環境操作下所面臨之問題。於瞭解不信任投票制度在我國政治環境下之運作情形後，本文將總結不信任投票制度設計於我國面臨之問題、可能實行之時點與建議。

The No-Confidence Vote System has been implemented in Taiwan for over 16 years (2014) since the Fourth Constitutional Amendment in 1997. The need to review the effectiveness of implementation arises. We raise the question of whether implementation of the No-Confidence Vote System has run into deadlock under the current practice of party politics and dominating rulings by the two major political parties. This research plans to explore the problems encountered in the implementation of the No-Confidence Vote system under the current political environment from analysis of the origination and connotation, as well as the history and procedures of the No-Confidence Vote System in Taiwan. We will also explore the current political environment and analyze the two instances of No-confidence Votes initiated after the system was written into the constitution in the Fourth Constitutional Amendment. Analysis of the No-Confidence Vote system as implemented under the current political environment will lead this research into discussion of the problems encountered when implementing the No-Confidence Vote System in Taiwan, as well as the best implementation time and relevant recommendations in the conclusion section.