In this study, intermediate thermo-mechanical treated Al-2.0wt%Li, and Al-2.0wt%Li-1.2wt%Cu-1.0wt%Mg-0.12wt%Zr alloys were tested in tension at 10℃ and elevated temperature (100, 200 and 300℃). The results are follows : The tensile strength of Al-Li-Cu-Mg-Zr alloy is the highest but the elongation of Al-Li alloy is the highest(106%) among the all alloys in tension at 300℃. The Portervin-LeChartlier effect is showed in Al-Li-Cu-Mg-Zr alloy at 10 and 100℃, because of tangled dislocation by Mg and Cu. In the true stress-strain curves of all alloy, the peaks of stress at 300℃ are showed at the strain less than 0.1. In the binary alloy, the dynamic restoration process at 200 and 300℃ is nearly similar to dynamic recovery type. The hot deformation stress is decreased with increase of dynamic recovery degree, but the elongation is increased. When the strain the strain rate are constant, the temperature dependence of hot deformation stress is increased with increase of deformation temperature. The elongation and degree of dynamic recovery are decreased with increase of hot deformation activation energy, but the deformation stresses slightly increased.