In this paper, compact tension(CT) specimens of 2024T62 sheet with thickness of 2.5 mm, a superalloy with thickness of 1.5 mm and a high-strength steel sheet with thickness of 1.7 mm were treated by laser shock processing, three spots with diameter of 6 mm overlapped along the extension line of precut crack. The fatigue crack growth rates of laser shock processed specimens were compared with those without LSP, the results show that effects of laser shock strengthening have much difference along the crack growth line, the fatigue growth rates can't be fitted by the Paris formula, but decreased in whole.