This paper attempts to compare and analyze numeral classifiers of Bodo, Rabha and Kok Borok languages. They have been recognised with same sub-group and they migrated together in North-East India. (Chatterji, Suniti Kumar, Kirata Jana Kriti, 2007, page -45-46). Some Similarities and Dissimilarities are found among these languages. Each language has its own Structures and Functions in numeral classifiers.