Global Environment Facility has identified that marine invasive alien species spread is one of the four major risk factors which treats global marine environmental safety.Ballast water discharge is the main way for the spread of biological invasion.With physical methods of strong electric field ionization discharge at atmospheric pressure,O2 in air and sea H2O(gaseous)are ionization,and then dissociate to a number of oxygen active particles(ROS)such as OH,O2+,H2O+,etc.