The　porous　anodic　alumina　membranes　(PAAMs)　have　been　successfully　used　as　templates　for　the　fabrication　of　functional　nano-materials　due　to　their　outstanding　regularity　and　physicochemical　properties.　In　this　paper,　a　transparent　double-sided　anodic　alumina　membrane　with　ultra-thin　aluminum　substrate　was　fabricated　with　the　three-step　anodic　oxidation　method　in　the　oxalic　acid　electrolyte.　The　characters　such　as　the　top-surface　morphology,　membrane　thickness,　and　depth　of　nanopores　of　this　three-layer　(Al2O3-Al-Al2O3)　sandwiched　nano-structure　were　controllable　through　regulating　the　main　anodic　oxidation　conditions,　e.g.,　anodic　oxidation　time　of　various　steps,　coating　remove　process.　The　experiments　data　revealed　that　the　aluminum　substrate　is　exponential　declined　with　the　oxidation　time　when　it　was　approximately　reduced　by　a　few　micrometers.　This　new　double-sided　anodic　alumina　membrane　can　be　used　as　the　high-quality　functional　field　emission　materials　and　templates.