Abstract: Abstract: According to the fixed position experiment, the eco-economy of different intercropping patterns was studied in one year. The results indicated that: (1) The economical yield and the biomass yield of different intercropping patterns were higher than CK. (2) The land equivalent ratio of different intercropping patterns was higher than mono-cropping pattern, because of the legumes and cereals intercropped, and the land utilization efficiency increased by from 4.0% to7.0%. (3) The pesticide, chemical fertilizer and agricultural mechanical inputs of different intercropping patterns were reduced, which was important to improve the farmland ecological environment. (4) The benefits and the ratio of economical output to input of the different intercropping patterns were improved much more than CK. The annual economical benefit was raised to 25067.7 yuan per hectare, and increased by 18.97% at most. We concluded that the intercropping pattern was the optimum substitution pattern to adjust the planting structure and to improve the farmland ecological environment.