This text study the natural rainfall-interflow processes uplayers(0~40 cm) and downlayers(40~110 cm) in red soil hilly region.The results showed: the interflow flux in oiltea camellia is more than that in resumed field with different land use modes,but the peaks flux is oppositional.The rainfall-interflow processes begin is better early and close is later in oiltea camellia than that in resumed field.The laggard duration time increase with soil layers depth increasing.The values of interflow flux,peak flux,laggard duration and prolonged duration at uplayers are less than that at downlayers.The uplayers interflow proceed in answer to runflow is sooner than that of downlayers.Most interflow occurring causes is different with different kinds of rainfall.The laggard duration time is shorter in peak rainfall processes than others.Most interflows are driving-flow.