Based on the soil profile data from Second National Soil Survey of Hebei,the paper compared the differences of spatial predication of soil organic carbon(SOC)between two prediction methods,one is predicted only by land use and soil type,the other is by combining land use and soil type with Kriging to study the application of Kriging method in spatial predication of soil organic carbon.The results indicated that result by using land use type alone as auxiliary information the predicted SOC could account for 19.0% of the total variance, while combining the land use and ordinary Kriging could account for 30.2%,with a significant improvement in prediction accuracy.In contrast, using soil genus information alone as auxiliary information could account for 45.0% of the total variance,however,combining with ordinary Kriging did not affect the predict accuracy efficiently, which is 44.8% of the total variance.Therefore,if Kriging can be applied to improve the prediction ability of SOC spatial variation is related with what the related factor of soil organic carbon is used to predicate the SOC spatial distribution.