Abstract:Fourteen profiles from humid subtropical region were investigated using physical, ehemical, and mineralogical techniques. The results showed that zonality factors had impacts on soil properties to some extent within subtropical region, however, the factors like parent material were also important, its influences on properties such as CEC, iron free degree of clay were greater than that of bioclimate; Quaternary red earth was not the weathering products of the sandstone underlain but influenced by surrounding rocks or loess based on the particle size distributinn pattern and heavy mineral associations; while the decrease of weathering degree from bouom in surface in the profile was the result of climate changes from humid and warm to mild.