The article describes the aspirated consonants of Maithili in the framework of generative phonology. Maithili is the second major language of Nepal and the author tries to find the answer to the question: Are the Maithili aspirated consonants to be treated as unitary phonemes or as clusters of two phenomes? The article searches past studies on consonants of Maithili. It discusses the Maithili phonological inventory with a set of phonological units presented in table. It presents aspiration as a distinctive feature. It discusses salient features of aspiration in consonants of Maithili. The study is based on the pre-generative approach and the simplicity metric way. (Rajeev Ranjan Singh 2007-01-10)