The electropolymerization of pyrrole in the presence of Dawson-type tungstophosphate yields a polypyrrole (PPy) film doped with tungstophosphate anions on the electrode surfaces. The electrochemical behaviour of this film was described, and the stability and pH-dependence were also discussed. The tungstophosphate doped PPy film has a catalytic effect on the reduction of oxygen and gave an anodic shift of 150-200 mV for the reduction of oxygen.