Embankment remedy is researched to solve the problem of no blast through sand layer in thick silt foundation happened in Da-xiao-yushan south embankment project.According to construction technology,the reasons for no blast through the sand layer are simply analyzed.Then simple Bishop method is used to check stability of the problem embankment.Remedy is proposed to comparatively analyze stability of the bad blasting compaction and the ideal blasting compaction.Results show that the stability of embankment can be improved if increasing landside blast,and at the same time thickening and widening anti-slide loading berm.It provides an important reference for foundation treatment design and construction in such complex silt foundation with sand layer.