Abstract: In order to explore and establish the system of soil formula of faba bean, to provide scientific reference for rational application of fertilizer, local white faba bean, urea, single superphosphate and potassium sulphate were used as materials, and the “3414” regression optimum design principle was adopted to conduct the field fertilizer experiments. The effect of nitrogen, phosphorus and potassium fertilizer on faba bean was investigated. The results showed that different fertilization treatments significantly affected the production, output, uptake of nutrients of the aboveground part and uptake of nutrients per 100 kg faba bean. Compared with treatment 1(N₀P₀K₀), treatment 7(N₂P₃K₂) increased the production by 1600.50 kg per hectare and increased the output value by 5601.75 yuan per hectare. Treatment 6 (N₂P₂K₂), 9 (N₂P₂K₁) and 14 (N₂P₁K₁) increased the production by1450.5 kg per hectare and increased the output value by 5076.75 yuan per hectare. Treatment 6 had the highest nutrient uptake of nitrogen, phosphorus and potassium for the aboveground part of the plant, next was treatment 4 (N₂P₀K₂) for phosphorus and potassium, and treatment 8 (N₂P₂K₀) for nitrogen. Nitrogen uptake of treatment 2 and 6 was 6.26 kg and 5.90 kg per 100 kg faba bean, while that of treatment 8 was lower than any of them. Treatment 2 and 4 had the best absorption of phosphorus and potassium, respectively 0.76 and 3.07 kg per 100 kg faba bean, while that of treatment 1 and 8 were the lowest. The test results indicated that fertilization was the major factor that affected the absorption of soil nutrients and the production of faba bean. Rational fertilization could effectively improve the yield of faba bean, especially the application of nitrogen. The production of faba bean could increase by 23.33 kg with one kilogram of pure nitrogen; and could increase by 6.12 and 3.34 kg with one kilogram of pure phosphorus and potassium, respectively. The limiting factors of the nutrient uptake of faba bean were first the application of nitrogen fertilizer, and second the application of phosphorus fertilizer. The correction coefficients of available nutrients N, P₂O₅ and K₂O, of faba bean soil were 1.806711, 0.80545 and 1.397613, respectively.