Aggregate is the basic structural unit of soil, and its stability is an important index to evaluate soil quality. In this paper, the stability of soil aggregates developed from different parent materials (Limestone, Quaternary laterite, Sand shale) in the south subtropical region was determined by wet-sieving method and Le bissonnais method. The results showed that:(1) With the increase of soil depth, soil bulk density increased gradually, while porosity, organic matter and free iron oxide content decreased. The highest content of organic matter was 22.44~42.97 g/kg. The clay (40.93% and 42.51%) and silt (41.69% and 42.31%) were the main parent materials of Limestone soil and Quaternary laterite soil, while clay content of Sand shale soil was the lowest, 33.79%. (2) After wet-sieving, the contents of water stable aggregates in Limestone soil, Quaternary Red soil and Sand Shale soil were 91.58%~92.31%, 76.45%~90.80%, and 79.18%~86.67%, respectively. The stability of aggregates in soils decreased with the increase of soil depth. (3) The MWD values of soil aggregates of the three parent materials were slow-wetting treatment > pre-wetting shock treatment > rapid-wetting treatment, The 40-60 cm soil layer developed from Sand shale was most sensitive to dissipation and mechanical crushing, and its relative dissipation index RSI and relative mechanical crushing index RMI were 0.78 and 0.42, respectively. The stability of soil aggregates was positively correlated with clay, organic matter and free iron content.