Abstract:This paper has calculated Interspecific Association Coefficients (I. A.C.) and Chi-spare values of 36 species from 141 sample areas in nondeciduous stands in the North Fujian. According to the I.A.C., when λ=0.7 the species was classified into five categories using Maximum Tree Method, it more directly reflects the intimate level of the I.A.C. of the species. In order to prove the feasibility of the I.A.C. in the application, four pairs of tree species which have the maximum were selected from the I.A.C and Spearman grade correlation coefficients (r3) of each pair were calculated. It was shown that four r3, were all at extreme significant level.The results provide an inportant basis for establishing mixed plantation of broad-leaved trees.