Aluminum alloy, as a lightweight metallic material, is widely used in various fields. To prevent unnecessary damage and corrosion, a protective paint layer is usually applied to its surface. However, during routine inspection and maintenance, the surface paint layer needs to be removed. Traditional cleaning methods are commonly used in industrial applications but have limitations. For example, mechanical abrasion cleaning relies on various specialized tools to remove the contaminant layer through physical contact and friction. However, this direct physical interaction and the high intensity of mechanical impact can easily damage the workpiece surface, failing to meet the strict requirements of high cleanliness and precision, and the method is inefficient and poses poor working conditions. The high-pressure water jet cleaning method consumes a large amount of water at the initial stage, and the polluted water is difficult to recycle; in addition, it carries the risk of secondary rusting on the metal surface. Chemical cleaning, although widely used, can easily cause environmental pollution and pose health risks to operators. Ultrasonic cleaning is limited by the size of the cleaning tank, which restricts the size of workpieces that can be cleaned. Therefore, there is an urgent need for a novel cleaning method. With the increasing reliability of lasers and significantly reduced production and maintenance costs, laser-based removal of surface contaminants has been widely applied.