Abstract: Four different types of Ti-base lead dioxide eletrodes including PbO₂/SnO²⁺Sb₂O₃/Ti，Bi-PbO₂/SnO²⁺Sb₂O₃/Ti，PbO₂（ultrasonic）/SnO²⁺Sb₂O₃/Ti，and Bi-PbO₂（ultrasonic）/SnO²⁺Sb₂O₃/Ti were prepared with electro-deposition method.Their electric catalysis and electro catalytic selectivity were contrasted by anodic polarization curves，and the effect of electrolysing phenol solution was analyzed.There lives were contrasted by accelerated life test，and the morphology of surface coating was characterized by scanning electron microscopy.Results show bismuth-doped electrode′s electro-catalytic property and electro catalytic selectivity for the degradation of phenol was better，compared with the PbO₂ electrode by electro-deposition，the PbO₂ electrode by ultrasonic-associated electro-deposition had its own excellent characteristics as follows：its specific area was larger，its apparent catalytic activity was better，and its life was longer.

Key words: ultrasonic-associated electro-deposition, lead dioxide electrode, phenol, degradation, catalytic activity