Bathou is traditional religion of Bodos.This paper attempts to study on Bathou religion of Bodos.. The main goals of this study are to explore origin and philosophy of Bathouism, socio- cultural significance and role of its in society.Moreover,I will try to find out cause of revising and giving new shape to Bathouism. The Bodos belong to Indo-Mongoloid family of Tibeto Burman stock of Assam-Burmese group. They are one of major tribes or tribals of Assam. It can be cited that their identity is not uniform as an ethnic group. Different names are used to designate them. In West Bengal and Nepal, they are known as Meches. It is believed that Bodos first came from South-West China through Tibet and Burma. The date of migration from their original abode, namely North Western China, to this part of present India is debated and needs further research. The generic term Bodo was first applied by Hudson to all speaking group of Tibeto-Burman languages like or Boro of Brahmaputra valley, 1 Meches of Lower Assam and west Bengal, Rabhas, Garos, Dimasas, Tipras, Lalungs, Sonowals, Hajongs, Deuris, Chutias and ohter tribes. The Bodos are living in a scattered manner throughout North-Eastern region of India including some small pocket areas outside India in Nepal.Linguistically Bodos include a large group of people who are speakers of Tibeto-Burman languages of North and East Bengal, Assam and Burma. I. Bathouism as traditional religion of Bodos : The traditional religion of Bodos is called Bathou which has been practiced since time immemorial in South East Asia. This religion is invaribaly linked up with and centred round worship of Bathoubwrai or Sibwrai. i.e supreme god of Bodos. Hence it is known as Bathou religion. In language, Ba means five and thou means deep philosophical thought.These five elemenst are- Bar (Air), San (Sun), Ha (Earth), Or (Fire) and Okhrang (Sky). Hence, Bathou means five principles, significances which are mysterious: not easy to understand and feel without meditation. Amongst follower of Bathou religion, God is known as Bathou Bwrai. In language, word Bwrai signifies oldest or most elderly man in power and knowledge or supreme in all respects. Therefore, he exclusively represents supreme soul, poromatma, who is omnipotent, omnicient,omnipresent. Fire cant burn him, water cant moisten, air cant dry him and spear cant pierce him. He is illuminator of all earthly objects; He is source of all knowledge and lights. He bestows us everything we need in this world. The creator of these five elements is called Bathou Bwrai or God. After creating physical form of a man with composite elements, he confers his spirit to inanimate body which displays as totality of living beings body. So, Bathou is religion and philosophy that embodies spirituality of creator or God. The followers of Bathou religion is spirituality through prayers, offerings and sacrifices offered to deities. Many scholars observe regarding religion of Bodos. According to Sindney Endle, the religion of Kachari race is distinctly of type commonly known as animistic and its underlying principle is characteristically one of fear or dead. 2 He again says in same monograph-in typical Kachari Village as a rule neither idol nor place of worship is to be found; but to Kachari mind and imagination earth, air and sky are alike people with a vast number of invisible spiritual beings. Known usually as mwdai, all possessing powers and faculties far greater than those of man. Mwdai is a word which means deity (God or Goddess) and should be mistaken for invisible spirits. 3