目前國內一貫道的研究成果中，以學位論文的數量最多、面向也最廣，故本文即就此進行綜合回顧。首先說明一貫道研究的學術處境，其後介紹此一研究領域的開展歷程，進而將此50篇學位論文置入時間軸中，由其年代分佈觀其「量」的趨勢。其次，本文分析研究者的角色定位與研究目的，發現其中將近86%為信仰者，然而局內人的身分雖較利於進入研究場域，卻容易因此受限而影響研究品質。本文另依研究選題分類探討，評介這些論文的研究主題、材料及研究取徑、比較研究者的學科背景與選題的相關性，並突顯其中為數最多的宗教研究專業訓練，在相關研究成果中所產生的實際影響。最後則進行綜合評論，省思既有學位論文的特性與通病，將其置入國內宗教研究的發展脈絡中來理解，以展望未來更為紮實而寬廣的可能方向。 Research on Yiguan Dao (I-Kuan Tao) in the R.O.C. has mostly been conducted in graduate theses, and has addressed a wide array of topics. Therefore, the purpose of this paper is to review and reflect on these studies. It begins by describing the academic environment surrounding the research on Yiguan Dao (I-Kuan Tao), and then introduces the process that this field of research has developed over time. This article aligns fifty theses along a single timeline and explores how the trend of quantity distribution has ebbed and flowed. Secondly, this paper analyzes the backgrounds and motives of these researchers, and highlights the result that nearly 86% of these individuals are practitioners of Yiguan Dao (I-Kuan Tao). While the insider status of these researchers greatly facilitated their ability to carry out these studies, this dual identity has also easily compromised the quality of their research. This paper also applies some topical categories to evaluate the topics of these theses, their materials, and approaches. I analyze the relevance between the academic backgrounds of these researchers and the kinds of topics they choose to study. It also becomes apparent that most of these researchers, who receive their professional training in Religious Studies, are deeply influenced by the concerns of their discipline. At the end of this paper, it synthesizes and evaluates the studies in an effort to explore the common characteristics and drawbacks of studying Yiguan Dao (I-Kuan Tao) in these theses. By placing these studies within the context of larger trends within Religious Studies in the R.O.C., this article hopes to establish a solider and more comprehensive direction for the future research on Yiguan Dao (I-Kuan Tao).