In this paper, to meet the needs of studying work of dynamic mechanical properties of welded joint, the dynamic mechanical properties of welded joint were measured by means of SHPB(Split Hopkinson Pressure Bar).The dynamic mechanical property’s curves of every part of welded joint were obtained. For studying the dynamic behavior of mechanical heterogeneity of welded joint, important data were offered. The method of test creates a new way of studying dynamic mechanical properties of welded joint. In this paper, to meet the needs of studying work of dynamic mechanical properties of welded joints, the dynamic mechanical properties of welded joints were by means of SHPB (Split Hopkinson Pressure Bar). Dynamic mechanical property of curves of every part of welded joint For studying the dynamic behavior of mechanical heterogeneity of welded joint, important data were offered. The method of test creates a new way of studying dynamic mechanical properties of welded joint.