Based on themodel of carrying soil failure under the condition of rainfal,l the influence of
rainfallon the stability ofcarrying soilduring the afforestation ofa slopewas investigated. The research
indicates that the stability of carrying soil is closely related to the character of rainfal,l the gradientof
an afforested slope, the characteristics of slope surface, the feature of soil and the thickness of soi.l
When the gradientof a slope to be afforested is large, a thin soil layerwill be necessary in order to
maintain the stability of carrying soi.l