[Objective] To investigate the influences of soil erosion on the distribution and properties of soil in order to provide scientific basis for controlling soil erosion and land degradation in Pinus massoniana forestry.[Methods] Soil properties of eroded slope in P. massoniana forestry in the hilly red soil area of Southern China were studied based on statistics and the grey relational degree methods. The data was obtained by field surveying and sampling.[Results] Soil nutrients of the eroded slope were poor. Most of the soil physical and chemical indices were at or below level 4. There were significant differences in the soil index between soil on the slope and soil in the erosion gully. Among eighteen soil indices, ten soil indices of soil erosion gully were better than the corresponding indicators of soil on the slope. Compared with slope, the correlation between erosion gully and soil properties was higher, and the number of significant correlation indices of soil was less in erosion gully.[Conclusion] Soil erosion had a significant impact on the properties and distribution of soil on eroded slope in P. massoniana forest in the hilly red soil area of Southern China. Nevertheless, the mechanisms of the effect of erosion on soil properties needs to be further studied.