Halogenated　benzenes　are　chemical　materials　used　widely.　In　this　paper,　its　degradation　and　debromination　by　electron　beam　was　studied.　Comparing　the　pre-and-post　of　beam　radiation,　differing　from　pH　conditions,　its　radiolysis　was　researched　The　results　show　that　degradation　of　bromobenzene　solution　by　radiolysis　of　UV　and　electron　beam　is　feasible.