Abstract: Agriculture plays an important role in the economy of Inner Mongolia,The development degree of agriculture ultimately determines the scale and speed of other economy sectors. It is the key to the realization of modern strategic targets.Using 1978—2014 annual data of Inner Mongolia statistical yearbook we select the following six variables to construct intrinsic linear model,which are practitioners of the first industry,total planting area of crops,total power of the agricultural machinery, effective irrigation area,appropriate amount of agricultural fertilizer and damage area. The research results show that the main factors influencing the Inner Mongolia agricultural output is the total power of agricultural machinery,effective irrigation area and appropriate amount of agricultural fertilizer. Three suggestions are proposed according to the empirical analysis to strengthen the agricultural mechanization degree and improve agriculture irrigation facilities and use fertilizer rationally and to improve the use efficiency of fertilizer.