In order to determine the effect of fertilizer application and density on the yield effect of mungbean erect variety, a quadratic orthogonal rotation combination design experiment with four factors and five levels was conducted to investigate nitrogen, phosphorus, potassium, and density on yield of erect variety Jilv 10. At the same time, a function model between four factors and production was established, and the effect of each factor was analyzed and the model was optimized. The main factor effect analysis showed that the effect of four factors on the yield was in order of potash fertilizer＞plant spacing＞phosphate fertilizer＞nitrogen fertilizer. The single factor effect analysis showed that with the increase of nitrogen and potash fertilizer application, the yield first decreased and then increased. With the increase of phosphate fertilizer application, the yield showed a downward trend. With the increase of plant spacing, the output showed a trend of rising first and then decreasing. The results of model optimization showed that when the mungbean yield was greater than 1 332.05 kg/ha. The appropriate fertilization amount for N,P₂O₅, and K₂O were 55.6～65.8 kg/ha, 81.9～96 kg/ha, and 71.75～90.65 kg/ha, respectively, and the appropriate plant spacing was 9.62～10.62 cm.