Abstract: This paper obtained the artificially frozen soil creep features under dynamic load by the experimental study. The dynamic creep curve of the frozen clay was divided into three stages: the initial creep stage, the steady creep stage and accelerated creep stage. This paper, in accordance with the dynamic triaxial test results of the artificially frozen soil, based on the dynamics, continuum mechanics and frozen soil mechanics principles, established the creep constitutive model of the artificially frozen soil under dynamic load, that was the elastic-viscoelastic-viscoplastic constitutive model. The improved Xiyuan Model was successfully embedded in ADINA FEM. Using this Model, the artificially frozen soil creep under dynamic load was carried on finite element numerical simulation. The results of experiments were close to the calculated ones.