Abstract: Species-individuals relationships of Castanopsis fargesii community are studied in the middle subtropics．The resu1ts show that there are strong positive rank correlations between any two of the three indices of the residual standard ermr(RSE)，average of absolute deviation(AAD)and average of absolute relative deviation(AARD)．No difference is shown in the assessments to the species-individuals relationship mode1．The best curve for arbor is y=1．8518x²-7．8486 +14．5．and the best curve for shrub layer is Y=12．484e^0.1572x；species abundance of both tree layer and shrub 1ayer obey Log normal distribution，which suggest that this Castanopsis fargesii community development is relatively well，and its stability and biod iversity are very high．