The present invention discloses single side anodization aluminum shuttering preparation device. It includes a quadratic teflon shell with slot on four internal surfaces for inserting lead plate, leadplate having electrolyte flow seam on upper surface and electrolyte container on shell bottom, four side surfaces having rectangular step slot with rectangle window, interval formed between lead plateand rectangle window inner side surface, interval between lead plate and rectangle window inner side surface and lead plate upper electrolyte flow seam to form electrolyte convective circulation loop. Said invention Adopts multiwindow design, making one surface of aluminum foil contacting air outside the container, another surface contacting electrolyte solution in container, such structure effectively preventing aluminum foil both sides simultaneously oxidization, thereby reaching preparation aluminium oxide templet.