Abstract: Lead alloy strips were cast-rolled in the combined ultrasonic and electromagnetic field, and the effects of combined ultrasonic and electromagnetic field on microstructure and mechanical properties of cast-rolled lead alloy strip were investigated. The results show that the microstructures of cast-rolled lead strips became more homogeneous, the cellular dendrites were broken and the refined grains could be observed in the microstructure of the lead alloy strips cast-rolled in the combined ultrasonic and electromagnetic field. Compared with the general cast-rolled lead strip, the mechanical properties of the combined energy field cast-rolling lead strip increased significantly. The tensile strength, yield strength, elongation and hardness of the combined energy field cast-rolling lead strip increased by 12.42%, 29.17%, 24.16% and 1.7% respectively, and the anisotropy of lead alloy strip was improved as well.