Sloping ridge-tillage is one of the most common ridge-tillage methods in Chinese Mollisol region. However, there are few studies related to the effects of sloping ridge-tillage on hillslope soil erosion. Thus, the indoor simulated rainfall experiments were conducted under 50 and 100 mm/h rainfall intensities with a typical slope of 5 degree (transforming from longitudinal ridge-tillage to contourridge-tillage) to analyze the differences in hillslope soil erosion between sloping ridge-tillage and longitudinal ridge-tillage system in Chinese Mollisol region. The results showed that: (1) Under 50 and 100 mm/h rainfall intensities, the erosion rates in sloping ridge-tillage before ridge failure were only 0.46% and 0.35% of the longitudinal ridge-tillage, respectively. However, during the 45-minute rainfall, once the ridge was failed, the erosion rates in sloping ridge-tillage were 1.24 and 1.03 times higher than that in longitudinal ridge-tillage under 50 and 100 mm/h rainfall intensities, respectively. (2) Both runoff and erosion rates suddenly changed with the rainfall time after ridge failure in sloping ridge-tillage system. Before ridge failure in sloping ridge-tillage system, both runoff and erosion rates were lower than those in longitudinal ridge-tillage under 50 and 100 mm/h rainfall intensities. The average runoff rate in sloping ridge-tillage were only 8.42% and 3.75% of that in longitudinal ridge-tillage under the two rainfall intensities, respectively; and the average erosion rates in the former were 0.46% and 0.35% of those in the latter,respectively.After ridge failure in sloping ridge-tillage system, the average runoff rate were 1.33 and 1.47 times higher than those in longitudinal ridge system, the average erosion rates in the former were 2.03 and 1.62 times higher than those in the later under 50 and 100 mm/h rainfall intensities, respectively.(3) Under the two rainfall intensities, there was a extremely significant linear relationship between runoff and erosion amount in sloping ridge-tillage (P<0.01), while the correlation was not significant after ridge failure (P>0.05). There was a extremely significant linear relationship between runoff and erosion amount in longitudinal ridge-tillage. (4) Under the two rainfall intensities, more than 90% of runoff and sediment generated after ridge failure in sloping ridge-tillage system. Therefore, the key approach for controlling soil erosion in sloping gridge-tillage is to improve the ridge stability and to prevent the ridge failure.