The characteristics of runoff and sediment yield on the red soil slope nested gravel-sand were studied through artificial simulated rainfall, and the differences of runoff and sediment yield between nested gravel red soil slope and no gravel slope under the conditions of rainfall intensity (60,120 mm/h) and slope gradient (10°, 15°, 20° and 25°) were analyzed. The results were as follows:(1) The start time of production runoff (T) on the nested gravel slope was less than that on the no gravel slope, and compare with no gravel slope, the runoff production time on the nested gravel slope was delayed 4.20, 2.95, 2.23 and 1.03 min, respectively, when the slope gradient was 10°, 15°, 20° and 25° under the rainfall intensity 60 mm/h. (2) When the slope gradient was the same, the runoff rate of the nested gravel-sand slope was less than that of no gravel slope obviously, but the increase of rainfall intensity could cover up the influence of nested gravel-sand on the decrease of runoff rate. (3) When the rainfall intensity was 60 mm/h and the slope was 10°, the average runoff rate of nested gravel-sand slope was the lowest, while the average runoff rate was 4.5 times higher than the lowest value when the rainfall intensity was 120 mm/h and the slope gradient was 25°. When the rainfall intensity was 120 mm/h and the slope gradient was 25°, the average runoff rate of no gravel-sand slope was 4.8 times higher than the lowest. (4) The sediment yield intensity and the amount of sediment yield increased with the increasing of rainfall intensity and slope gradient. When the rainfall intensity was 60 mm/h and the gradient was 10° and 25°, the average sediment yield intensity of nested gravel-sand slope was 6.0% and 28.4% of the no gravel slope, respectively. When the rainfall intensity was 120 mm/h, the value was 33.9% and 25.3%, respectively.