On the basis of the principle of laser-peening (LP) and shot-peening (SP), the finite element method (FEM) model of LP and SP are established based on the software ABAQUS. To LP, the switchover loading of laser shock wave is solved; To SP, the assemble between pills and sheet metal is settled. The residual stress in the thickness after one LP and multi-LP and the distribution of residual stress after single pill and multi-pills shot the sheet metal are analyzed. The depth, magnitude of residual stress, the quality of surface and the shape of surface after the LP and SP are compared, respectively. The conclusion is that the effect of improving the employing longevity after LP is better than SP’, the LP technique is and will be substitute for the SP technique to change the property of material and widely be used in manufacture.