Abstract: The river ecological restoration projects should determine the ecological restoration purpose according to the river type, function and scale, and then to determine its safety standard and the design frequency. The ecological restoration projects should be evaluated and analyzed for their safety indexes such as erosion resistance,durability and flood resistance. Based on the comprehensive analysis of relevant design manuals and conventional practices in Chian and abroad, the safety evaluation index system is put forward on the basis of reference with flood control standards. According to the principle of zoning ecological restoration measures, the safety standard of the ecological restoration project of Yongding River is preliminarily evaluated for the purpose of maintaining a long-term stable river ecosystem.