Soils derived from granite (G), quaternary red earth (Q), and sand shale (S) with forestland (FL), paddy field (PF), and upland (UL) were collected in Guangdong lateritic red soil region. The content of ferric oxide, organic carbon and its fractions in soil aggregate were analyzed, and the differences of soil aggregate stability and the factors affecting the aggregate stability were explored. The results showed that:(1) Aggregates larger than 0.25 mm in soil dominated under three land use types with three parent materials; 2~5 mm aggregates was the highest (58.51%) in forestland soil derived from granite; 0.25~2 mm aggregates was the highest in paddy field and upland soils derived from granite (62.93%) and quaternary laterite (59.21%). Geometric mean diameter (GMD) and mean weight diameter (MWD) of soil aggregates were highest in forestland with sand shale parent materials. (2) The soil organic carbon (SOC) and component content in forest land soil were mainly distributed in 2~5 mm aggregates derived from three parent materials, and that in paddy and upland soils were mainly distributed in <0.053 mm aggregates. The ferric oxide form content in forestland soil were mainly distributed in <0.053 and 0.25~2 mm aggregates derived from three parent materials, and that in paddy and upland soils were mainly distributed in <0.053 mm aggregate. (3) Correlation analysis and principal component analysis showed that the MWD and GMD had significant correlations with HAC, HAC/FAC, Fe_fr, and Fe_co. Forestland soil aggregates derived from sand shale parent materials had the best cementing ability among different land use types and parent materials. The results showed that the influence of parent materials and utilization modes on the stability of aggregates was significant, mainly due to the differences of HAC, HAC/FAC, Fe_fr, and Fe_co. At the same time, forestland soil aggregates with sand shale parent materials had higher structural stability.