Abstract: This paper studied the effects of different fertilizer models on simulation for the 3414 fertilizer experiments, which were conducted from 2008 to 2012 in 30 cities in Guangdong Province. By analyzing the data,the index system of soil available nitrogen abundance of Guangdong peanut were established. The results indicated that, the regression equation index for soil available nitrogen content was y=29.906lnx-54.015 (the correlation coefficients was 0.766); the regression equation of the recommended nitrogen content was y=-85.184lnx 494.04 (the correlation coefficients was 0.725). According to the mathematical model, the sufficiency and deficiency range of the soil effective nitrogen were divided into 5 levels: ＜60 mg/kg, 60-80 mg/kg, 80-110 mg/kg,110-150 mg/kg and ＞150 mg/kg, and the proposed index of supplying nitrogen per hectare were 142.5 kg,120.0-142.5 kg, 90.0-120.0 kg, 67.5-90.0 kg and 67.5 kg, respectively.