<p>The corrosion resistance of the 2060A-T8 Al-Cu-Li alloy along the rolling direction (RD), RD-30° and RD-45°, and the transverse direction (TD) was systematically studied by intergranular corrosion (IGC), exfoliation corrosion (EXCO), and electrochemical corrosion. Combined with detailed microstructure characterization of the alloy along different directions, the corrosion resistance mechanism was analyzed and investigated in depth. The results showed that the corrosion resistance of the 2060A-T8 Al-Cu-Li alloy had serious anisotropy due to differences in grain morphology and precipitated phases along different directions. The sequence of IGC and EXCO resistance was: TD &gt; RD-30° &gt; RD-45° &gt; RD. The lower corrosion resistance of the 2060A-T8 Al-Cu-Li alloy in the RD and RD-45° directions was mainly due to the existence of more subgrain boundaries and the chain-like distribution of the T₁ phase at the grain and subgrain boundaries, forming continuous corrosion channels. These microstructure characteristics made them more corrosion-sensitive. Although the precipitated phases at the grain boundaries in the RD-30° direction were distributed in chains, the particles were large and inhomogeneous. The precipitated phase at the grain boundaries in the TD direction became discontinuous and coarse, so the TD direction had better corrosion resistance.</p>