In this paper, the ultrasonic and electrical catalytic degradation of phenol in wastewater and the preparation of Pd, Ru catalytic electrode were introduced. The surface structure of the electrode was analyzed with SEM and XPS. The effect of several variables, such as pH, reaction time, voltage, electrolyte etc. on the degradation of phenol and COD removal was investigated. The results showed that the degradation of phenol reached 100%, and COD removal was 90%, with ultrasonic and electrical catalytic degra...