Using semi-variogram and Kriging method, the distribution of soil available N in the 4 tea planting areas in Jiangsu province and Zhejiang province was analyzed, and a comparative analysis on the spatial heterogeneity of soil available N in tea garden was conducted using geostatistics and spatial interpolation method. Moreover, the influencing factors were also discussed. The results showed that, the average of soil available N is 108.85 mg/kg(Longjing), 101.61 mg/kg(Xilong), 98.02 mg/kg(Dongshan) and 81.08 mg/kg(Tianmuhu), the average level of soil available N in Zhejiang province is higher than that in Jiangsu province.The spatial distribution of soil available N is different, Tianmuhu and Longjing are in accordance with spherical model, Dongshan is in accordance with exponential model and Xilong is in accordance with Gaussian model. A medium spatial correlation existed in the soil available N content of Jiangsu′s tea garden, while a strong spatial correlation was discovered in Zhejiang.Spatial distribution of soil available N was mainly forced by product approach(fertilization management).The quantity of soil available N in four planting areas are general lower, the percentage of low soil available N area are 85.08%（Tianmuhu), 96.35%(Dongshan), 91.08%(Xilong) and 87.96%(Longjing).There are also some regions (area percentage below 5%)with higher soil available N, so partition management based on soil available N should be adopted to improving tea quality and products.

soil of tea garden; available N; spatial heterogeneity; geostatistics