Distributions of water-stable aggregates and organic C, N and P were studied in upland red soils different in land use and fertility level. Results show that the content of aggregates >5 mm in wasteland was significant higher than in fields of other land uses. And peanut land and orchard was dominated with the fraction of 0.25~0.053 mm aggregates. Regardless of fertility levels, vegetable land was the highest in contents of soil organic C, N and P in all fractions of aggregates, except aggregates >5 mm, which illustrates that long-term fertilization in vegetable land has resulted in enrichment of soil organic C, N and P. In these upland red soils, soil organic C, N and P accumulated in aggregates of fractions >5 mm, 5~2 mm and 2~1 mm, which shows that soil nutrients in aggregate increased with the increase in particle size, especially soil organic C. Soil N followed a similar trend, but soil P was distributed quite evenly in water-stable aggregates. It was particularly so in high-fertility vegetable land and wasteland soil. The contents of 2~1 mm and 1~0.5 mm aggregates in upland red soils, regardless of land use, were extremely positively correlated with soil organic C, N and P.