Abstract: Direct explosive welding for 5083 Aluminum alloy with CCSB steel combination is difficult. In this paper, the feasibility of trial by using the intermediate layer CCSB in the explosion welding process is explored, determined the explosion welding parameter range and microstructure at the interface. The test showed that the gasification and melting reaction layer caused by the explosion enormous energy in 5083-CCSB steel interface zone is the direct reason for the difficulty of explosive welding. Between the two plates joined intermediate layer CCSB, this method can effectively reduce the effect of the energy at the 5083-CCSB interface, in order to achieve a good combination.