Abstract: The concept of intermediate cutting index which precisely quantifies the probability of a tree being intended to be cut in intermediate cutting has been put forward in this paper. This breaks through the limit that trees are intended to be cut by traditional general qualitative methods.Six indexes(degree of freedom,mingling,neighborhood comparison,health index,spatial density and aim index)are chosen to construct intermediate cutting index,then AHP is used to get weight coefficients of the six indexes combined with types of the objective stands,so the formula can be obtained.one experiment sample plot of Cyclobalanopsis myrsinaefolia mixed stand in Longhushan forest farm in Hunan,Yuanjiang has been taken as an example,a fairly good tending and thinning plan has been obtained by calculating intermediate cutting indexes.

Key words: Cyclobalanopsis myrsinaefolia mixed stand, trees to be cut, intermediate cutting Index