The soil available nutrient correction coefficient was the main parameter of formula fertilization by soil testing.According to the “3414”test data, using Excel data analysis method,the regression equation of soil available nutrients and correction coefficient was established. The results showed that, paddy soil available nitrogen,phosphorus，potassium and the correction coefficients were significant regression relation；power function was optimal mathematical model；curve respectively was yN=11831x-0.722 8，yP=22726x-0.956 3，yK=58436x-1.000 5. The curve was also described two lines to calculate the soil effective nutrient correction coefficient.