To study the effect of moisture content and strain rate of frozen soil on the energy dissipation and failure pattern of concrete-frozen soil under impact load, a series of impact compressive tests was conducted on composite with different moisture content and strain rate by using a Φ50mm separated Hopkinson Pressure Bar apparatus. The test results show that energy absorption of concrete-frozen soil composite firstly increased and then decreased with the inclusion of moisture content. And due to the bonding between the soil particles is broken by the extra ice crystals in frozen soil,the energy absorption of composite decreased when the moisture content of frozen soil was more than the saturation state. As the strain rate increased,the new crack in the composite absorbs more energy that the original crack expansion,and the energy absorption of composite also increased; Due to the cushion of frozen soil behind the concrete,part of the energy is absorbed by the frozen soil when thecomposite was under inpact loads, so there is a close relationship between the failure pattern of the concrete-frozen composite and the absorption energy of the frozen soil. The greater damage of the frozen soil sample and the smaller damage of the concrete sample with the absorption energy increased when the strain rate is the same.