A series of novel RuO2/Ti electrodes were prepared by doping Pd, Co, Si elements into surface layer and introducing Sn-Sb coating as intermediate layer. Compared with RuO2/Ti electrode, these modified electrodes showed better electro-chemical properties and longer service-life. The doped elements had different effects on the electro-catalytic properties and service-life. The different modified electrodes was used in Nitrobenzene (NB) wastewater treatment, the results showed that the modified electrodes, especially the electrodes with intermediate layers could effectively remove the organic pollutants in wastewater.