Abstract: The spatial distribution study of forest unit area stock was vital for the development of forest management strategies. The spatial pattern of forest stock per unit area was studied by using geostatistics with the survey data of forest resource planning and design in Miyi county.The results showed that the most suitable semi-variance theoretical model was the exponential model for unit area stock. The global Moron I and Z values of unit area stock were 0.79 and 446.71 respectively, showing a strong trend of aggregation. In addition, the Nugget C₀ of Miyi county's unit area stock was 50%, indicating a moderate spatial autocorrelation, which was affected by both structural and random factors. By the ARCGIS ordinary Kriging interpolation, the spatial distribution map was drawn for forest unit area stock in Miyi county.The results of geostatistics showed that the average unit area stock of was 50.76 m³·hm^-2, under a pattern of decreasing from west to east, consistent with changes in topography, and contrary to the changes of population density in Miyi county. These results indicated that the spatial distribution of unit area stock was affected by both natural and human factors in Miyi county.