Iliac bone specimens of 49 normal Chinese subjects were studied. A series of bone histomorphometric parameters were analysed, including mean trabecular width, trabecular bone volume, mean trabecular plate thickness, mean trabecular plate density and mean trabecular plate spacing. The data suggest that there are close correlations of these parameters with aging. The correlations are very significant between mean trabecular width and trabecular bone volume and mean trabecular plate thickness.