Anodizing processes is the conversion of the aluminum surface to aluminum oxide while the part is the anode in an electrolytic cell. The object of the anodizing was increased corrosion resistant, paint adhesion and was provided unique, decorative colors. Many electrolytes, under different conditions, have been used for the anodic oxidation of alumminum and its alloys. This paper deals with the procedures used in the anodic oxidation of aluminum and its alloys, the nature and properties of the oxide films, their uses and anodizing equipment and process control.