The hilly region of Southern China is the main area where the tea plantations are distributed in our country. Studies of the spatial variability of soil properties, especially of the organic matter (OM), is helpful for the precision agriculture. The Mengding tea plantation in Sichuan Province was used as the subject of this paper. Geostatistics were used for the analysis of the spatial variability of OM in this tea plantation with two sampling scales. In the tea plantation at the small scale, the result analyzed by semivariograms indicated that the OM content was moderately spatially dependent, the rate of nugget to sill was 49.9%,The range of spatially dependent OM was 894m, and both structural factors and the random factors equally affected the spatial variability of the OM content. The OM content had a stronger anisotropic structure in the aspect of the slope, and a weaker one at the aclinic aspect of the slope. According to the Ordinary Kriging method the equivalence of the OM content was distributed along the aclinic aspect of the slopefrom northeast to southwest, and the OM content was reduced as the elevation went down. In the representative tea plantation at the micro scale, the result analyzed by semivariograms indicated that the OM content was strongly spatially dependent, because the rate of nugget to sill was 4.1%. The range of spatially dependent for OM was 311m, and the spatial variability of the OM content was fundamentally affected by structural factors, It had a stronger anisotropic structure in the aspect of the slope and in the aspect of 45o with the aclinic aspect of the slope.The Ordinary Kriging method showed that the OM content increased from the top of the tea plantation to the bottom.