Abstract: This paper studies the influence of different confining pressure and consolidation ratio on dynamic properties of laterite in Nanchang through dynamic triaxial tests. The influence rule of confining pressure and consolidation ratio on dynamic strength index are discussed. The experimental results show that the dynamic strength of laterite in Nanchang increases with the confining pressure, but decreases with the consolidation ratio. With the increase of the consolidation ratio, the dynamic internal cohesion decreases, the dynamic angle of internal friction increases. By comparing the results of dynamic and static test, the dynamic internal cohesion of laterite in Nanchang is less than the static internal cohesion, the dynamic angle of internal friction is more than the static angle of internal friction.