Yi ancient books are the precious wealth of the Chinese nation. With the rapid development of document informatization today， the standardization of terms in Yi ancient books has become an urgent problem to be solved in the research and development of Yi ancient books. Firstly， this paper through to a large number of Yi ancient books content filtering and sorting， finding out one of the highest frequencies in Yi language words， and carrying on the Chinese specification tagging. Secondly， making Yi ancient books standard terminology translation principles. Finally， setting up ancient books database of Yi language terminology standardization in the technical guidance， to provide more efficient and convenient for Yi language ancient books digitization management means， then we will further promote the inheritance and protection of Yi ancient books.