Abstract: A lead oxide-coated electrode for use in electrolysis is disclosed, which comprises a primary layer comprising platinum and/or platinum oxide, an intermediate layer comprising .alpha.-PbO.sub.2, and a coating layer comprising .beta.-PbO.sub.2 successively coated on a substrate comprising a corrosion resistant metal. The electrode has a strong and durable lead oxide coating firmly bonded to the substrate, does not suffer from passivation, resistance increase, etc. and can be used stably for a long time at high current density. A process for producing the electrode is also disclosed.