A removable laboratory system of soil and water loss (RLSSWL) is proposed and developed. RLSSWL can substitute removable experimentation laboratory (vehicular) for the field and immovable soil on runoff plot. By adopting artificial rainfall simulation to runoff plot of different gradients,RLSSWL may be used to analyze soil physicochemical properties and soil erosion processes on hillslope and thus greatly improves the efficiency of soil loss observation. The erosion soil-bin has a hydraulic automatic rising device,as key part of RLSSWL,and soil-bin gradient can be adjusted from 0° to 30° according to different experiment requirements. Using RLSSWL may accelerate data collection,shorten experiment period,and make data collection more convenient. Based on the soil erosion characteristics in Yangtze River,an interflow collection device is added in RLSSWL. By improving the soil-bin,it becomes more practicable and rational to soil erosion experiment on hillslope. Meanwhile,rainfall intensity of artificial rainfall simulation has a wider range,which can be adjusted between 20 and 170 mm/h.