A　simple　method　of　microwave　assisted　chemical　bath　deposition　(MA-CBD)　was　adopted　to　fabricate　cadmium　sulfide　(CdS)　thin　films.　The　superhydrophobic　surface　with　a　water　contact　angle　(CA)　of　151　degrees　was　obtained.　Via　a　scanning　electron　microscopy　(SEM)　observation,　the　film　was　proved　having　a　porous　micro/nano-binary　structure　which　can　change　the　property　of　the　surface　and　highly　enhance　the　hydrophobicity　of　the　film.　A　possible　mechanism　was　suggested　to　describe　the　growth　of　the　porous　structure,　in　which　the　microwave　heating　takes　an　important　role　in　the　formation　of　two　distinct　characteristic　dimensions　of　CdS　precipitates,　the　growth　of　CdS　sheets　in　micro-scale　and　sphere　particles　in　nano-scale.　The　superhydrophobic　films　may　provide　novel　platforms　for　photovoltaic,　sensor,　microfluidic　and　other　device　applications.　(C)　2007　Published　by　Elsevier　Inc.