Abstract: The Indian languages which have tones are mostly Tibeto-Burman languages which are spoken in North-Eastern part of India, except two languages namely Gojri and Punjabi which belong to Indo-Aryan language family. Like many others Tibeto-Burman Languages, Bodo is also tonal Language. However dearth of proper research of its tonal phenomenon has left many questions unanswered. There have been conflicting views about the number of tones (rising from zero to four) tone assignment system and morpho-phonemics of the languages. The only agreement among the researchers is that, the Bodo language is a tonal language. So, this analysis is a step to settle regarding the tone or tonal phonology of the Bodo language with the help of Bodo informants and other scholars’ research works.