Studies on the phonological description of Kenyah language are very limited. Initiated by Lees, she found 24 phonemes of Lepo Tau, one of Kenyah language branches are briefly explained on her article. Listing 18 consonants and 6 vowels, this article provides a preliminary analysis of the sound system of Lepo Tau. To a certain extent, Rufinus similarly states the same number of phonemes of the l…