In the whole arrangement of our nation economy development, the loess plateau region acts as an important strategic position which connects the east and west of China. The sustainable development of the loess plateau can set an example to the development of the west China. Based on analysing the state of sustainable development of the loess plateau, the structure frame of sustainable dev elopment index system and sustainable development evaluation method are studied, the structure frame of sustainable dev elopment index system including three types of index such as advanced comprehensive index, basic index and element index has been desig ned, the AHP which can be used to calculate the sustainable development index weight supported by entropy technology,and compositeev aluation model that can evaluate the sustainable development of the loess plateau comprehensively. The scientific theory of regulating and inducing the sustainable development of loess plateau region is provided.