Abstract: Soybean and maize belt composite planting mode is a new and efficient planting mode, which can achieve the win-win goal of stable yield and increase income of maize and soybean. Taking Qinxian County as an example, from the aspects of land selection and preparation, timely and suitable sowing, reasonable selection of planting mode, selection of good varieties, green prevention and control of diseases, pests and grass, the soybean and maize belt composite planting technology was introduced in detail, so as to steadily realize the sustainable development of grain, oil and feed in China.