Abstract: In order to fully promote the technology of whole-process mechanization of soybean and corn strip composite planting in the loess hilly region of China, through making analysis of soybean corn and its mechanized production characteristics and soybean corn strip composite planting conditions in Pingliang, the key factors restricting the development of soybean and corn strip composite planting in Pingliang are proposed as follows, the planting efficiency is low, the climate and market impact the effect, and the mechanization technology is immature. The four aspects of optimizing appropriate planting methods, strengthening the integrated development of mechanization, informatization and agronomy, giving full play to the advantages of agricultural mechanization technology extension system, and improving the mechanization level of soybean and corn strip compound planting are deeply analyzed, so as to promote the integration of agricultural machinery and agronomy, and promote the balanced development of soybean and corn strip compound planting in large areas.