Abstract: Through the representation and testing of the samples at different thickness,the microstructure and tensile performance of 80 mm thick 6082-T6 Al alloy material at the surface layer,1/4 thickness layer and 1/2 thickness layer were studied.The results show that there are significant differences in tensile properties of profiles in different thickness layers,and the tensile properties of the same thickness layer also change greatly in different directions (longitudinal,transverse and 45°).The 1/2 thickness layer has the highest longitudinal tensile strength. This is mainly the result of the common effect of the structure distribution and the texture component.