Anodic aluminium membrane（AAM） templates with nanopore arrays have been prepared by anodizing 99.99%Aluminium poils in 0.3mol/L H2C2O4 solutions,at the voltage of 40V,45V,50V and 55V respectively. Highly arranged nanopore arrays have been observed by scanning electron microscope（SEM） in the AAM templates fabricated at diffenent voltages.And voltages have effects on diameter,density and distribution of nanopores in AAMS.
