Four kinds of PbO2 electrodes of doping and non-doping Bismuth were prepared by electro-deposition and ultrasonic-associated electro-deposition. There lifes were contrasted by accelerated life test. Phenol solution was treated by the electrodes. And the effect of electrolysis was tested. The morphology of surface coating was charatctered by scanning electron microscopy. The results show that PbO2 electrode’s life is longer by ultrasonic-associated electro-depo-sition than by electro-deposition, and bismuth-doped electrode’s electro-catalytic property is better.