Anodization of Zircaloy-4 in EDTA electrolyte has been studied under different anodizing conditions at room temperature. It has been observed that the change of current density and solvent has a marked influence on the kinetics of anodization. The kinetic parameters like rate of formation(dV/dt), ionic current efficiency(È ) and differential field of formation(FD) were calculated. The surface natures of the anodized films were studied from Scanning Electron Micrographs(SEM) under different anodizing conditions.