The finite element model of epoxy polyamide primer on 2219 aluminum alloy plate is established by using COMSOL Multiphysics simulation software,and the laser cleaning process is simulated by loading classical Gaussian pulse heat source on the surface.The influence of the change of cleaning parameters on the temperature field,the cleaning effect of different coating thickness and the ablation depth is explored.Through the analysis of the simulation results,it was found that when the repetition frequency was 25 kHz and the power was 20 W,the epoxy polyamide primer could be completely removed with the lap rate of 50% and 60% under the premise of not damaging the aluminum matrix.The CETC26thPELpulse fiber laser was used to clean the material,and the ultra depth of field 3D microscope was used to observe the microstructure of the material surface.It was found that when the energy density was 22.94 J/cm2,the aluminum alloy matrix would be damaged during the cleaning process,and the lap rate was 70%,which would increase the roughness of the material surface and affect the coating performance.The results provide a theoretical and experimental basis for laser cleaning of high strength aluminum alloy coatings.