<p>In the present work, the effects of Ce addition and heat treatment on the microstructures, mechanical properties and corrosion resistance of hot-rolled Al-Cu-Mg alloys were investigated. The experimental results indicated that both the heat treatment and Ce addition strongly influenced the mechanical properties and corrosion resistance. Specifically, the mechanical strength could rank as an order of the T6-treated samples &gt; the T4-treated samples &gt; the as-rolled samples &gt; the T5-treated samples, and the Ce addition also enhanced the mechanical strength. Through analyzing the microstructure characteristics, it was concluded that the grain refinement and the increased precipitates amounts largely contributed to the optimized mechanical properties. Besides, the corrosion resistance ranked as an order of the T4-treated samples &gt; the as-rolled samples &gt; the T6-treated samples &gt; the T5-treated samples. Decreasing grain sizes and precipitates amounts were beneficial to improving the corrosion resistance. Moreover, the Ce addition obviously enhanced the corrosion resistance by increasing the compactness of corrosion product films which were complementally decorated by Ce oxides.</p>