Magnetic pulse impacting elastic medium forming technology of tube was proposed, and the influence laws of discharge energy, forming temperature and compound forming etc. on the tube deformation were investigated. Then, at room temperature, the deformation degree of tube increases with the increasing of discharge energy (When the discharge energy is 7 kJ, the expansion ratio is 24% and the thinning ratio is 22%), and the maximum deformation position is closed to the center with the increasing of discharge energy (When the discharge energy is 7 kJ, the maximum deformation position is located in the center area). Furthermore, when the discharge energy is constant and the forming temperature is adjusted to 25-150 ℃, the maximum diameter of deformed tube has no obvious change, indicating that during the high-rate forming process of magnetic pulse impacting, the forming temperature in the range of 25-150 ℃ has a weak influence on the deformation of 5A02 aluminum alloy tube. In addition, the influences of composite forming for magnetic pulse impacting elastic medium preforming at room temperature and quasi-static forming at the forming temperature of 100 and 150 ℃ on the forming of 5A02 aluminum alloy tube were explored. The results show that compared with quasi-static forming and magnetic pulse impacting elastic medium forming, the compound forming is easier for the tube to obtain a greater degree of deformation to fill the die