To explore the influence of rainfall infiltration on the multi-field characteristics of slopes,the actual engineering slope is selected to establish a model,and combined with the actual rainfall conditions in the area.the SEEP/W,SIGMA/W and SLOPE/W functional modules of GeoStudio finite element software are used to analyze and evaluate the infiltration behavior,displacement trend and stability of the untreated original slope,the slope with comprehensive chemical reinforcement,the slope with local pier reinforcement at the foot of the slope and the slope reinforced with equidistant holes under the condition of 189.3 mm/d rainfall intensity and duration of 24 h.The results show that with the continuous infiltration of rainwater,the upper soil of the slope surface is saturated first,thus forming a temporary saturation area,and the saturation boundary of this area gradually expands inward.At the same time,in view of the high permeability of the silt layer,the stability index of the original slope decreases rapidly under the influence of rainfall.Among the various slope improvement measures,the comprehensive deployment of improvement measures are particularly effective for intercepting rainwater.After comprehensive evaluation,this comprehensive deployed slope consolidation method is particularly outstanding in terms of anti-permeability performance,and the fixed-point pier slope consolidation scheme for the slope foot has advantages in ensuring slope stability and economic cost,which can provide reference for slope stability analysis in practical engineering.