Based on the study of tillage experiment with tracer method on sloping farmland in karst area of Zhongliang mountain in Chongqing city,the results showed: The mean soil displacement distance,soil translocation aroused by hoe and shovel tillage is closely related to slope gradient.Accepting the implement design and handling effect,the mean soil displacement distance,soil translocation by trample-shovel downslope tillage is to have certain correlativity with soil moisture.The soil displacement distance,soil translocation aroused by shovel downslope tillage has no difference with hoe's,and they are more bigger than trample-shovel's.Till the contour tillage,soil displacement distance,soil translocation of shovel is about 2.5 times of hoe's.Shovel mean soil displacement distance,soil translocation of downslope tillage is 2~2.4 times of contour tillage;the hoe's of downslope tillage is 3~8.76 times of contour tillage.The order Arousing soil translocation is: hoeing downslope tillage> shoveling downslope tillage > shoveling contour tillage > hoeing contour tillage > trample-shovel downslope tillage.That karst area farming land breaks to pieces,the slope comparative short is the main cause of strong tillage erosion.