Yi medicine appropriate technology in the Yi region plays an important role, this paper based on the development of Yi medicine and Yi medicine disease medicine class ancient books, Yi medicine appropriate technology source trace, including its historical development, change, clinical application, the basic characteristics of sorting, analysis and summary. The appropriate technology of Yi medicine is developed from the medical technology of Yi medicine, and its formation and development is divided into four periods: primitive period, slavery period, feudal society period and modern period; It has a long history and distinctive Yi medicine characteristics, with rich variety and wide applications. With the continuous development and accumulation of Yi doctor understanding of appropriate technology, the concept of appropriate technology is gradually clear, the screening method tends to be unified, and the promotion mode gradually becomes standardized.