To reveal effects of the half-ridge less tillage measure on soil erosion characteristics at sloping farmlands of the Chinese black soil region, the artificial simulated rainfall experiments were carried out on 5° and 7° slopes with 75 mm/h and 100 mm/h rainfall intensities. The cross ridge treatments included all looseness (the soil bulk density was 1.00 g/cm³), upper looseness+lower compaction (the soil bulk densities was 1.00 and 1.20 g/cm³, respectively), upper compaction+ lower looseness (the soil bulk densities was 1.20 and 1.00 g/cm³, respectively) and all compaction (the soil bulk density was 1.20 g/cm³). The results showed that the half-ridge less tillage measuredelayed the overflow time of crossridge, and obviously regulated soil erosion. The soil erosion amounts decreased in the order of all looseness>upper looseness+lower compaction>all compaction>upper compaction+lower looseness. Except for the 5° slope with 75 mm/h rainfall intensity, compared with the all looseness treatment, the total runoff amounts of the upper compaction+lower looseness and all compaction treatments decreased by 16.1% to 19.4% and 6.6% to 11.4%, respectively, the soil erosion amounts decreased by 25.0% to 52.5% and 17.9% to 31.6%, respectively. Furthermore, the changes of both runoff rate and soil erosion rate of the upper compaction+ lower looseness and all compaction treatments with rainfall duration were relatively stable. Therefore, the half-ridge less tillage measure not only controlled the total runoff and soil erosion amounts but also regulated the runoff and soil erosion processes. In conclusion, the half-ridge less tillage measure should be selected scientifically according to the specific rainfall characteristics and topographic slope gradients of farmlands in the black soil region.