Abstract: Based on the neighborhood comparison and combined with the comparative indicators of variations in size, the paper puts forward a quantify method describing the stand spatial advantage degree. The investigated data of 6 plots in Korean pine-broadleaf mixed forest and 2 plots in Quercus aliena natural forest were used to test and verify this method. The results show that the method not only can express the stand spatial advantage degree but also the changes of stand spatial advantage degree after management, and it can be used to evaluate the forest management measures and operating results. Also, stand spatial advantage degree quantify method provids basis for the realization of optimized objective function for forest spatial structure