The deformation degree of aluminum alloy 7050 in the hot deformation has important influence on recrystallization, and its properties relate to the degree of recrystallization. Then, aluminum alloy 7050 sheets with 40 mm thickness were pressed to 25, 20, 15 and 10 mm at 410 ℃,10 mm·s-1. Furthermore, the microstructure, transmission topography, hardness, electrical conductivity, room temperature tensile properties, fatigue properties and intergranular corrosion properties of specimens with different thermal deformation degrees were investigated after solid solution and aging treatment. The experimental results show that the recrystallization increases gradually with the increase of the deformation degree during the hot compressing of aluminum alloy 7050. However, the increasing deformation degree increases the number of fine recrystallized grains, and the mechanical properties of aluminum alloy 7050 are remarkably improved as the Vickers hardness increases by 26 HV, the yield strength and tensile strength increase by 36 and 51 MPa respectively, and the number of fatigue fracture cycles increases by 3.76 million  times, but the corrosion resistance decreases slightly.