一貫道在臺灣的傳道環境與過去在中國時已有相當大的改變，除了政治經濟環境的改變之外，民眾的知識水平與社會連帶也與過往大不相同，這些原因都促使當代台灣的一貫道，發展出了有別於在中國時的宣道與辦道方式。本研究從教義、組織與宗教倫理實踐三個面相來探討，臺灣一貫道如何轉變承襲自中國傳統文化中救度宗教的特質，使其更能適應當代社會。而戰後受到一貫道與當局的政教關係與當時傳道背景的影響，臺灣一貫道約分為十八個支線，各自有其發展特色。在無法窮盡所有臺灣一貫道的個案情況之下，以在當代較常參與公共事務的兩個組線——發一組與寶光組），作為調查訪談的田野。研究結果顯示，當代一貫道朝向更入世化與制度化轉型，使教義從追求彼世的極樂，轉而更著重於此世的關注。而在天命領導制度的傳承上，則更加的制度化一改救贖恩寵源自於一人的傳統。而在宗教倫理的實踐上，除了更貼近儒家的淑世行動之外，更朝公共宗教的特質發展。總而言之，一貫道在當代社會之中，逐漸捨去巫術、情感性與人格化的特質，而朝更理性、除魅與入世的方向發展。 / How to adapt the complicated and quickly changing world for the traditional religion? It is the major concern for those religions in the contemporary world. This dissertation will use the Yi Guan Dao (一貫道) as the empirical source to discuss such question. Because of the transition of the political economic environment, the improvement of the knowledge level of individual and the change of social solidarity, the missionary condition of Yi Guan Dao in Taiwan has lots of difference compared to the condition when Yi Guan Dao in China, forcing the missionary of Yi Guan Dao to change their way of missions and preach in Taiwan. This dissertation will use three factors, which are doctrine, religious organization and the practice of religious ethics, to discuss how the Yi Guan Dao transferring its character inherit from the Chinese Salvationist religion to make it much suitable for the modern society in Taiwan. Due to the social and political context after world war II, there are 18 Sect of Yi Guan Dao in Taiwan, however, this dissertation will choose the most representative two (Fa Yi Sect and Bao-Guang Sec) as the field of fieldwork. The research result shows that the contemporary Yi Guan Dao has transferred to more engaged and institutionalized than they used to be. In this vein, their doctrine has transferred from focusing on the bliss of afterlife to put more attention on this life; In their inherited of the leading system of Mandate of Heaven, it becomes more institutionalized than used to, which focusing on the traditions that the redemption grace is originated from the only one. In their practice of religious ethics, besides more close to the idea of refining of the world from the Confucianism, they also have the characteristic of public religion. In general, the Yi Guan Dao in the contemporary society, they losing their character of witchcraft, affectivity, and anthropomorphization, becoming more rationalized, more disenchantment and more engaged to the secular world.