Ice formation has long been a major issue troubling the aviation industry, leading to significant energy consumption annually in addressing this problem. Superhydrophobic coatings are an important passive anti-icing strategy. Although beryllium copper alloys are widely used in the aviation field, the superhydrophobic anti-icing coatings reported in the literature primarily use copper as the substrate, with few studies focusing on beryllium copper alloys. In this study, two reactions were employed to construct rough structures at different scales on the surface of beryllium-copper alloy, a material commonly used in the aviation industry. These structures include micrometer-scale acid-etched morphology and needle-like/layered structures with thicknesses in tens of nanometers, as well as a combination of both, forming a dual micro-nano scale structure. This hierarchical dual-scale structure is believed to capture more air upon contact with water droplets, thereby offering excellent superhydrophobicity and anti-icing properties. After surface modification with 1