The effect of land slope upon the amount of the upslope, sideslope and downslope splash erosion was studied by using the simulated rainfall tests individually. The results indicated that the relation between the amount of the upslope and downslope splash erosion and land slope was roughly parabolic, and that when the critical slope was between 10°—15° and 20°—25°, but when i=2.037mm/min., the relation between the amount of sideslope splash erosion and land slope was a power function, and the critical slope disappeared, and that the relation detween the amount of downslope splash erosion and land slope was on the leaner increase, whose ascending rate increased with an increase in rainfall intensity. Finally, the multiple-factor equation of total amount of raindrop splash erosion, EI and land slope (S) was given in this paper, i. e. ST=5.985 (EI)^0.544S^0.471 where, ST——the total amount of solash erosion (g) per unit area E——raindrop kinetic energy (J/m²) I——rainfall intensity (mm/min.)