Abstract: The synergism of SBD-UV on the decomposition of benzene was studied.The results show that the synergism of UV energy and plasma can promote the decomposition of benzene.The decomposition rate of benzene by SBD-UV254 nm increased obviously at high voltage.The decomposition rate and mineralization rate of benzene under 9 kV increased by 10% when the SBD-UV254 nm was used,while the polymerization rate did not change greatly.At low voltage,the decomposition rate and mineralization rate of benzene obviously increased when the SBD-UV185 nm was used,and the polymerization rate increased as well.