Dielectric barrier discharge(DBD)has been receiving great attentions for pollutants control recently.The types of power supply of DBD reactor affect the discharge modes,the formation of chemical active species and thus the removal efficiency of pollutants,so it is important to select an appropriate power supply for DBD discharge reactor.In this paper,a surface discharge type DBD reactor was utilized to degrade phenol in water;the influence of power supply types including power frequency(50Hz)AC,high frequency AC and bipolar pulse power supply on the ozone generation was studied using the surface discharge reactor.