Heavy　metals　(HMs)　and　polycyclic　aromatic　hydrocarbons　(PAHs)　are　prevalent　pollutants　in　the　environment,　and　their　intricate　interactions　amplify　the　challenges　of　remediating　complex　contaminations.　There　is　an　urgent　need　for　effective　methods　to　treat　these　composite　pollutants.　This　study　innovatively　demonstrates　that　the　electron　beam-persulfate　system　can　effectively　remove　PAHs　and　reduce　heavy　metals.　Compared　to　the　sole　use　of　electron　beam　irradiation,　the　degradation　rate　of　naphthalene　in　the　electron　beam-persulfate　system　increased　by　2.5　times,　and　the　reduction　efficiency　for　hexavalent　chromium　reached　97.6　%.　In　comparison　with　persulfate　alone,　the　treatment　efficiency　of　the　electron　beam-persulfate　system　for　NAP　increased　by　8　times,　achieving　complete　degradation　at　10　kGy,　with　the　degradation　process　conforming　to　pseudo-first-order　kinetics.　The　experimental　results　indicate　that　the　electron　beam-persulfate　system　is　a　stable　operational　system,　with　pH,　liquid　depth,　types　and　concentrations　of　inorganic　ions　exerting　a　minor　influence　on　the　system.　Experimental　analysis　confirmed　that　hydroxyl　and　sulfate　radicals　play　vital　roles　in　PAH　removal,　while　hydrated　electrons　and　sulfate　radicals　are　crucial　for　the　reduction　of　heavy　metals.　Toxicity　analysis　also　revealed　that　the　electron　beam-persulfate　system　achieves　harmless　treatment　of　complex　pollutants.　Therefore,　the　electron　beam-persulfate　system　offers　an　efficient　technology　that　maintains　stability　in　various　environments,　providing　novel　pathways　and　methods　for　pollutant　removal.　©　2025