Abstract: agricultural machinery has played a great role in modern production. With the further improvement of the level of Agricultural Mechanization in China,a large number of agricultural machinery have been applied in each process of agricultural production,which has significantly improved the labor production efficiency,made the implementation of agricultural production simpler,and significantly reduced the labor intensity of farmers,but at the same time,Many problems in the application of agricultural machinery are also highlighted. Therefore,in order to further improve the application quality of agricultural machinery,starting from the application status of agricultural machinery,this paper analyzes the key factors and precautions of agricultural machinery selection,explains the reasonable ways of agricultural machinery selection,and summarizes the implementation ways of rational application of agricultural machinery.