O3　pollution　in　China　has　worsened　sharply　in　recent　years,　and　O3　formation　sensitivity　(OFS)　in　many　regions　have　gradually　changed,　with　eastern　China　as　the　most　typical　region.　This　study　constructed　the　transport　networks　of　O3　and　NO2　in　different　seasons　from　2017　to　2020.　The　transport　trends　and　the　clustering　formation　patterns　were　summarized　by　analyzing　the　topological　characteristics　of　the　transport　networks,　and　the　patterns　of　OFS　changes　were　diagnosed　by　analyzing　the　satellite　remote　sensing　data.　Based　on　that,　the　main　clusters　that　each　province　or　city　belongs　to　in　different　pollutant　transport　networks　were　summarized　and　proposals　for　the　inter-regional　joint　prevention　and　control　were　put　forward.　As　the　results　showed,　O3　transport　activity　was　most　active　in　spring　and　summer　and　least　active　in　winter,　while　NO2　transport　activity　was　most　active　in　autumn　and　winter　and　least　active　in　summer.　OFS　in　summer　mainly　consisted　of　transitional　regimes　and　NOx-limited　regimes,　while　that　in　other　seasons　was　mainly　VOC-limited　regimes.　Notably,　there　was　a　significant　upward　trend　in　the　proportion　of　transitional　regimes　and　NOx-limited　regimes　in　spring,　autumn,　and　winter.　For　regions　showing　NOx-limited　regime,　areas　with　higher　out-weighted　degrees　in　the　NO2　transport　network　should　focus　on　controlling　local　NOx　emissions,　such　as　central　regions　in　summer.　For　regions　showing　VOC-limited　regime,　areas　with　higher　out-weighted　degrees　in　the　O3　transport　network　should　focus　on　controlling　local　VOCs　emissions,　such　as　central　and　south-central　regions　in　summer.　For　regions　that　belong　to　the　same　cluster　and　present　the　same　OFS　in　each　specific　season,　regional　cooperative　emission　reduction　strategies　should　be　established　to　block　important　transmission　paths　and　weaken　regional　pollution　consistency.　©　2024　Elsevier　B.V.