A novel idea for the electrochemical mineralization of environmentally persistent 2,4,6-trinitrophenol(TNP) has been investigated in aqueous solutions on the graphite/β−PbO2 (G/β− PbO2) anode by electrocatalytic degradation method. This anode shows high overvoltage for oxygen evolution, long service lifetime and excellent electrocatalytic degradation efficiency for persistent organic pollutants.