[Objective] In order to investigate the rainfall infiltration process in fractured deposits

this study focuses on the variation of volume moisture content

matric suction

pore pressure and other changes in soil slope under rainfall conditions

as well as the migration low of wetting

which will provide theoretical support for the instability mechanism of rain-induced overburden slope.[Methods] The indoor model tests of two types of different structural soil deposits were carried out.[Results] The wetting fronts in the homogeneous accumulations were uniformly moving downward

the pore pressure and water content decreased and the matric suction increased when the wetting fronts reach the measuring points. The change of top slope were affected obviously by rainfall while the bottom showed a cumulative effect. The fissures constituted the dominant channel for rainwater infiltration and there was a transient saturated zone at the bottom of the fissures. The wetting fronts produced a strong depressions in this area that form a percolation "funnel" that causes the wetting fronts to reach its bottom in advance.[Conclusion] The rainfall infiltration processes are in the sequence of complete infiltration→slow infiltration→stable infiltration→saturated infiltration for homogeneous model and in the sequence of complete infiltration→local strongly infiltration→compensation accelerated infiltration→horizontal lateral infiltration for fracture model.