Buddhism accorded the degree and ability of the individual to develop the different teaching in Dharma during every different time and social environment. At the same time, it made the Buddhism to generate the diversion in explaining Dharma. The most serious conflict is the controversy of the MahAyAna and HInayAna. Even the ?rAvaka practitioner didn’t want to accept the teachings of the MahAyAna emotionally; however, the original texts have shown the differences between the Buddha and the Arahant. This thesis followed the context of the history of the Indian Buddhism－the Original Buddhism , the Sections Buddhism , the Three systems of MahAyAna Buddhism and accorded the corresponding texts (sutra and abhidharma) of the above 3 periods to make clear the change of the differences between the Buddha and the Arahant. The original texts (including the ?-gama and VInaya) recorded the following thing : the Arahant have shown the similarly greedy, angry behavior, etc. . Such behavior is called “vAsanA”(habit)by the later text. However, this situation is never happened to the enlightened Buddha in the original text. The abhidharmas of the Sections Buddhism named that unpleasant habit to “akliSTAjJAna” (unstained ignorance)and verified its content. Next, the MahAyAna Buddhism called it “jJeyAvAraNa ” (noetic hindrance). However the 3 systems of the MahAyAna Buddhism had different statements about the content of the defiled hindrance and noetic hindrance, even though all of them have the same belief on the teaching of the MahAyAna Buddhism. This paper tried hard to compare and make clear the point of the differences between the Buddha and the Arahant in hindrance- eliminating; for example, habits unstained ignorance, noetic hindrance. Besides, the 3 systems of the MahAyAna Buddhism had different definition and opinion about noetic hindrance and the relationship between “kleZAvAraNa”(defiled hindrance)and noetic hindrance, “fixation of selfness”( holding to the concept of ignorance)and “fixation of dharma”( holding to the things as realities). For the sake of the above, this paper focused on the VijJaptimAtratA-siddhi-ZAstra (Treatise on the Accomplishment of Consciousness-only) which is the important text of the YogAcAra school. After the discussion, hoping this thesis could make the reader clearly realizes what the Buddha taught and set up the whole structure of Buddhism.
