In order to find a suitable solution treatment, the polarization curve, AC impedance, open circuit potential and corrosion time of 2A96 Al-Li alloy were studied by means of electrochemical method, microstructure and microhardness. In T6 state, 2A96 Al-Li alloy was treated at 5 different solution temperatures for 60min. The experimental results showed that the corrosion voltage of the alloy was the minimum with the corrosion current density being the greatest when the solution temperature was 510℃, indicating the alloy was most vulnerable to corrosion, while the corrosion rate was the fastest at 510 ℃, and the open circuit potential decreased most rapidly with the increase of corrosion time. The grain size and microstructure of 2A96 Al-Li alloy were uniform at different solution temperatures, with the grain distribution being equiaxial. The hardness of the alloy reached 236.41 HV when the solution temperature was 540 ℃.