[Objective] The characteristics of soil erosion on sloping farmlands in the Mollisol region of Northeast China were analyzed in order to provide important scientific basis for the research, and the effective prevention and control of compound soil erosion.[Methods] Based on field investigation, theoretical researches and literature review, this paper outlined current status of compound soil erosion and analyzed characteristics of soil erosion on sloping farmlands in the Mollisol region of Northeast China.[Results] The characteristics of soil erosion on sloping farmlands in the Mollisol region of Northeast China included seasonal alternation and spatial overlapping of compound soil erosion induced by multi-forces, severe gully erosion in farmlands, strong performance of inflow erosion, and raindrop impact and seepage flow were key driving forces for hillslope soil erosion. The current research of compound soil erosion covered effects of freeze-thaw action on wind and water erosion, compound soil erosion by wind and water agents, and compound erosion caused by multi-forces in the Mollisol region of Northeast China.[Conclusion] The key fields for studying compound erosion caused by multi-forces were as follows:① processes and mechanisms of hillslope compound erosion caused by multi-forces; ② mechanism of freeze-thaw impacts on soil anti-erosivity; ③ quantifying contribution of freeze-thaw, snow melting, rainfall and inflow to hillslope soil erosion and gully erosion; ④ identifying watershed sediment source under multi-forces actions; ⑤ developing compound soil erosion prediction model; ⑥ assessing effectiveness of conservation measures for controlling compound soil erosion; ⑦ prevention zonalization of compound soil erosion in the Mollisol region of Northeast China.