Abstract: A superhydrophobic film of cuprous sulfide with micro-nano roughness is obtained through a cost-effective, simple and facile one-step aqueous method by impregnating copper foil in a certain concentration of thioacetamide solution without any template, surfactant or additive.The results indicate that the Cu₂S micro-nano dual scale rough structure generated on copper substrate exhibits a surface static contact angle for water of up to 171° and a water droplet rolling angle as low as 3.5°, demonstrating excellent superhydrophobic properties.