The result provides theoretical basis for popularizing suitable crop rotation mode and straw returning method in the black soil region of Northeast China, and balances the economic benefits of crop rotation and corn continuous cropping. In this study, three straw returning methods and two crop rotation modes were designed, including maize and soybean, and the differences in yield and economic benefits between different straw returning methods and crop rotation modes were studied. The results showed that:（1） Under the condition of straw burying and returning to the field, different rotation modes have a significant impact on the yield and economic benefit. The average yield of maize-soybean and rotation cycle planting（T₃） is higher than that of maize continuous cultivate（T₂） and maize-maize-soybean rotation cultivate（T₄）. The two planting modes of maize-soybean rotation and maize continuous cropping make the economic benefit of maize and soybean better, while the cycle economic benefit of maize continuous cropping is better.（2） Under the same planting mode, the way of straw burying and returning to field（T₄） can significantly improve the yield and economic benefit of maize and rotation cycle.（3） Under the experimental conditions, it is suggested that the policy subsidies for planting soybeans should be no less than 3 347 yuan/year·ha and 6242 yuan/year·ha respectively when the planting patterns are maize-soybean rotation and maize-maize-soybean rotation in the black soil area of central Jilin Province.