The method of artificial rainfall simulation was applied to study the effects of different slope gradients (5°, 8°, 15° and 25°) and rainfall intensities (1.0, 1.5, 2.0 and 2.5 mm/min) on the characteristics of soil erosion on the weathered granite slope land of South China. The results showed that both the runoff volume and runoff rate increased with the increasing rainfall intensity, but decreased with the increasing slope gradient. The runoff infiltration rate was significantly positively related to slope gradient (r=0.660, p<0.01)and exhibited three different stages with rainfall duration, including the initial all-infiltrated stage, rapid decreasing stage and the relatively stable stage. However, the effect of rainfall intensity on runoff yield was more obvious than that of slope gradient. There was a significantly positive correlation between the average sediment concentration and slope gradient(r=0.694, p<0.01). The relationship between rainfall intensity and average sediment concentration depended on the conditions of slope gradient. The soil erosion rate, which overall was positively related to slope gradient and rainfall intensity(r>0.580, p<0.05), showed a trend of increasing first and then decreasing with the prolongation of rainfall duration. The soil erosion rate and runoff rate showed a positive linear correlation (R²>0.861) on the steep slopes and a power function relationship (R²>0.966) on the gentle slopes. A revised typical soil loss equation model was used to predict the erosion rate, and it was found that the change trend of the simulated values was close to the actual measured values, which indicated that the revised model had certain applicability in the study area. These results could provide data support for the study of soil erosion rate in the weathered granite area, and had important significances for further understanding of soil erosion process.