Abstract: The cultivation model of high yield and high profit for super-sweet corn in planting density andN-P-K fertilizer combination was conducted by applying agricultual system engineering theory and optimunD satuation design and the results were analysed comprehensively. The results showed that it got 22 500yuan gross profit with 57 637 plants in density,209.3 kg pure N, 162.7 kg K2O and 104.7 kg P2O5 perhectare in the middle fertile soil condition of Guangdong province. Before releasing new variely with com-pact plant type and adaptation to the high plant density, it does not exceed 337.5 kg pure N, 337.5 kgK2O, 168.8 kg P2O5, and 75 000 plant per hectar in density.