[Method]This paper constructed evaluation index system based on the input-output analysis, in order to evaluated agricultural land use efficiency. [Objective]Study is to reveal agricultural land use efficiency change and its reasons in the western region , and pionted out the effects of unreasonable input on output of agricultural land. [Results ] According to the evaluation value of of DUM about agricultural land use efficiency, showing selected agricultural land use has a large difference in different space.At the same time, based on the models, agricultural land use technical efficiency and scale restricted efficiency efficiency, and they will be constraints of agricultural land intensive use in the future. [Conclusion]To improve agricultural land use efficiency, ameliorate the pattern of extensive management of agricultural land, must be scientific planning, rational distribution of resources, optimizing the structure.