Abstract: A superhydrophobic surface was fabricated on the plasticaluminum composite film by an isothermal hot embossing method in the solidlike state using a sifter covered with SiO2 microspheres as a mold through.The effects of impression pressure, sifter size and microsphere diameter on the microstructure and hydrophobicity of the resulting products were studied.The results indicated that the composite microstructure with a hydrophobic effect can be constructed on the surface of aluminumplastic composite films.The SiO2 microspheres could be well blended with PE matrix to form a composite system under a pressure, which led to a much stable connection between the matrix and SiO2 microspheres.The depth of the micrometer structure was improved with an increase of hotembossing pressure, and however the overloaded pressure might result in a cover of SiO2 microspheres with PE.The reasonable imprint pressure should be set as 8~12 MPa.The decrease of microsphere size could further result in an increase in water contact angle.The products achieved a superhydrophobic property when the water contact angle and rolling angle reached 150 ° and 1 °, respectively.