This paper will make a critical survey on early Buddhist cannons which concerned with how Buddhist challenges Brahmanism's 'caste genesis mythology' and reforms it in another way. First, through with the vision and horizon of modern genealogist way, we define 'Genealogy' as 'the philosophy which overwhelms our normalized thoughts by disclosing and tracing the question of the genesis'. Then, we critically investigate how Buddhist cannons reflect flexibly Brahmanism's caste mythology by disclosing and tracing its genesis, thereby we explain how Buddhist overwhelms the legacy of between Brahmanism mythology and caste system, and deconstructs the co-relation between religion knowledge and worldly power. Finally, we make a reflection and review on the difficulties of caste genealogy in early Buddhism.
