Currently,　air　pollution　is　primarily　characterized　by　PM2.5　and　O-3.　Therefore,　the　co-control　of　PM2.5　and　O-3　has　become　an　important　task　of　atmosphere　pollution　prevention　and　control　in　China.　However,　few　studies　have　been　conducted　on　the　emissions　from　vapor　recovery　and　processes,　which　is　an　important　source　of　VOCs.　This　paper　analyzed　the　VOC　emissions　of　three　vapor　process　technologies　in　service　stations　and　first　proposed　key　pollutants　for　priority　control　based　on　the　coordinated　reactivity　of　O-3　and　SOA.　The　concentration　of　VOCs　emitted　from　the　vapor　processor　was　3.14-9.95　g　m(-3),　compared　to　631.2-717.8　g　m(-3)　for　uncontrolled　vapor.　Alkanes,　alkenes,　and　halocarbons　accounted　for　a　high　proportion　of　the　vapor　both　before　and　after　control.　Among　the　emissions,　i-pentane,　n-butane,　and　i-butane　were　the　most　abundant　species.　Then,　the　species　of　OFP　and　SOAP　were　calculated　through　the　maximum　incremental　reactivity　(MIR)　and　fractional　aerosol　coefficient　(FAC).　The　average　source　reactivity　(SR)　value　of　the　VOC　emissions　from　three　service　stations　was　1.9　g　g(-1),　while　the　OFP　ranged　from　8.2　to　13.9　g　m(-3)　and　SOAP　ranged　from　0.18　to　0.36　g　m(-3).　By　considering　the　coordinated　chemical　reactivity　of　O-3　and　SOA,　a　comprehensive　control　index　(CCI)　was　proposed　for　the　control　of　key　pollutant　species　that　have　multiplier　effects　on　environment.　For　adsorption,　trans-2-butene　and　p-xylene　were　the　key　co-control　pollutants,　while　toluene　and　trans-2-butene　were　the　most　important　for　membrane　and　condensation　+　membrane　control.　A　50%　emission　reduction　of　the　top　two　key　species　that　emission　account　for　4.3%　averagely　will　reduce　O-3　by　18.4%　and　SOA　by　17.9%.