Abstract: Through the one-way tensile test of 5083 aluminum alloy extrusion pipe at different temperatures, the influence of temperature on its performance was studied, and the temperature range with good deformation performance was determined. The effect of the strain rate on the mechanical properties was analyzed. The parameters of material thermoplastic constitutive equation were determined. The thermoplastic constitutive equation of 5083 aluminum alloy tube for high temperature conditions was established. The results show that the high temperature plastic constitutive relationship established by using the double power function strengthening model can better describe the high temperature plastic deformation behavior of 5083 aluminum alloy.