Based on the soil nutrient contents of 34 998 soil samples of the recent 9 years in 9 counties of Ningde and sequential Gauss simulation analysis，the spatial distribution characteristics of soil nutrients in cultivated land in Ningde were analyzed，and suggestions for fertilization of sweet potato were put forward.The results showed that，the semi variograms of the five indexes in the soil were expressed in exponential model.The distribution of soil pH，organic matter，available nitrogen,available phosphorus and available potassium in Ningde were mainly ≤5.5，≥20 g/kg，100～250 mg/kg，>15 mg/kg，and <80 mg/kg，respectively.With the elevation decreased，the average soil pH increased，the average soil organic matter and nitrogen content decreased，and the average soil available phosphorus and potassium content increased firstly and then decreased.Lime，nitrogen fertilizer，phosphate fertilizer and potassium fertilizer should be applied according to the relation table between soil value and recommended fertilizer amount，or the regression relationship between altitude and fertilization amount，and also organic fertilizer application should be increased.