The impact of rain intensity on loess soil infiltration rate was investigate. The experimental work was done under laboratory condition at State Key Laboratory of Soil Erosion and Dry land Farming on the Loess Plateau, Shanxi Province, China during 2006-2009. The soil was subjected to three rain intensities (30, 60 and 90 mm h-1), for two hours duration under three different slope angles (5, 15 and 25). Samples of a silty loam-loess soil were taken and analyzed using standard analytical methods. The experiments were performed using a drip-type rainfall simulator fixed at 16 m above the ground. The rainfall over perforated metal boxes of 60 cm x100 cm x10 cm which covered with 7.5 cm layers of the soil material, uniformly distributed over a 2.5 cm layer of coarse sand. Infiltration was described by nonlinear relationship. The rain intensity showed notable effect on infiltration rate. Whereas infiltration rate tend to decrease with increase in rain intensity, it falls from the initial rate of 36.3, 48.8 and 78.8 mm h-1, to final rate of 30, 25.2 and 20 mm h1for 30, 60 and 90 mm h-1 rain intensities, respectively. On the other hand, the infiltration rate remains unchanged with changing in slope angle. The study concluded that increasing in rain intensity decreasing infiltration and increasing loess soils losses.