Aiming at the problem of "built, manage, use" serious disconnect that existed in small water conservancy projects in Ningxia, comprehensive consideration of the new requirements of water-saving irrigation, studied combining water rights management with water conservancy project property rights management, and introduced the ideas of water management based on ET, designed the small irrigation engineering property system model based on ET. Choosing Yellow River irrigation canal system, water irrigation pump station, irrigation motor-pumped wells as typical pilot project, the paper carried out the application research of property rights system reform of small irrigation projects. By the evaluation of performance of the typical project reform system, the typical project all showed good economic, water saving, social and ecological benefits, that played a demonstrative guide for deepening the reform of property right system of small water conservancy project in Ningxia .