Laser peen forming, while applied in the deep drawing of metal sheet, is hopeful to cut down the cost of molds and reduce the friction effect in traditional micro deep drawing. Using dynamic and mechanical load induced by high-energy nanosecond laser pulses, deformation of metal sheets under laser fluence of 15.1~27.0 J/cm2 is investigated, during which bulging effect is observed. The results show that the bugling occurs when the metal sheet collides with the die under the load induced by laser pulse. Moreover, experiment on bulging effect under different laser fluences is performed. Possible controlling method is presented through lowering laser fluence and starting from single pulse to multiple pulses, which can improve the molding rate.