Abstract: In order to acquire the attenuation law of different penetrator in soil for researching on detonating unexploded explosive ordnance with shape charge, the impact compression test was carried out with separated Hopkinson pressure bar and the overall process curves for stress-strain were gained. Results show that with the increase of soil density the impact stress peak of soil will rise, the impact stress peak of clay loam is comparative big and the rate of descent of impact stress is comparative slow; the water content of soil influences intensity on the clay loam in impact stress peak but the sand clay loam and the medium clay loam, the conclusion provides the foundation for researching attenuation law of different penetrator in soil.