In　order　to　control　the　increasing　ozone(O3)pollution　in　Hebi,Henan　Province,clarifying　the　pollution　characteristics　of　ozone　and　its　precursors　is　vital.　Therefore,we　conducted　a　comprehensive　analysis　of　O3　pollution　utilizing　the　OFP-PMF-EKMA　method　combined　with　online　hourly　resolution　monitoring　data　of　conventional　pollutants　and　volatile　organic　compounds(VOCs)in　the　summer　of　2022(June-September).　Ozone　formation　potential(OFP)was　used　to　identify　the　key　VOCs　species,and　the　PMF　model　was　used　to　identify　the　VOCs　emission　sources,whereas　EKMA　curves　and　scenario　analysis　were　used　to　identify　the　main　ozone　control　area　in　Hebi　and　to　determine　the　reduction　ratio　of　VOCs　and　NOx　in　a　scientifically　refined　way.　In　2022,Hebi　had　persistent　O3　pollution,with　the　highest　concentration　in　June.　Conditions　of　high　temperature,low　humidity,and　low　atmospheric　pressure　contributed　to　the　O3　accumulation.　Aromatic　and　oxygenated　volatile　organic　compounds(OVOCs)contributed　significantly　to　the　OFP　and　VOCs　fraction,　which　were　the　dominant　active　substance　and　concentration　dominant　species.　The　results　of　the　VOCs　source　analysis　indicated　that　vehicle　exhaust　sources(25.3%)were　the　main　source　of　atmospheric　VOCs,followed　by　process　sources(17.7%)and　biomass　combustion　sources(17.6%).　Thus,emission　sources　associated　with　the　combustion　of　fossil　fuels　and　industrial　production　emissions　were　the　most　urgent　sources　of　atmospheric　VOCs　to　be　controlled　in　Hebi.　The　O3　generation　in　Hebi　occurred　in　the　VOCs-sensitive　zones,and　the　emission　reduction　results　showed　that　a　synergistic　emission　reduction　of　VOCs　and　nitrogen　oxide(NOx)could　effectively　control　O3　pollution　with　a　75%　reduction　in　VOCs　and　a　10%　reduction　in　NOx.　©　2024　Science　Press.　All　rights　reserved.