Abstract: Combined with the actual situation in the construction of a railway project in the north of China,this paper expounds the correlation analysis of the area expansion soil engineering properties and cutting slope failure mode,for local district spring thaw characteristics,analyzes the new excavation by the spring thaw induced expansive soil slope failure mechanism.At the same time,the relationship between climate change and slope collapse is analyzed,with the consideration of spring melt characteristics of expansive rock slope stability calculation method,puts forward the reasonable engineering measures and suggestions.It has certain guiding significance to the construction of similar areas.