3　universal　green　infrastructures　(green　roof,　vegetative　swale　and　permeable　pavement)　and　2　grey　infrastructure　mitigations　(large　diameter　tube　&　reservoir)　were　selected　to　design　9　types　of　storm　water　drainage　system　modification　scenarios　in　Fuzhou　University　campus.　Under　different　extreme　weather　conditions　(3　recorded　rainfall　events　with　different　duration),　SWMM　model　was　used　to　analyze　urban　stormwater　and　flood　control　effect　under　different　simulation　scenarios　(SS1~SS9).　The　control　effect　included　runoff　depth,　node　J8　flood　flow　and　flood　time,　peak　time　and　full　flow　time　in　C8　pipeline.　The　simulations　results　showed　that　simulation　scenarios　including　green　infrastructure　had　better　control　effect.　Compared　to　other　simulation　scenarios,　combinations　of　green　roofs,　vegetative　swales　and　continuous　permeable　pavement　systems　(SS7)　exhibited　the　best　control　effect　on　runoff　depth　under　3　rainfall　events,　the　reduction　ratio　under　the　middle　duration　rainfall　event　was　the　highest,　reaching　78%.　While　combinations　of　green　roofs,　vegetative　swales,　continuous　permeable　pavement　systems　and　large　diameter　tubes　(SS8,　with　the　characteristics　of　infiltration,　retention　and　quick　drainage)　displayed　the　best　control　effect　on　node　J8　flood　flow　and　flood　time　under　3rainfall　events,　reaching　100%.　On　the　pipe　flood　control　aspect,　three　combinations　including　green　roofs,　vegetative　swales,　continuous　permeable　pavement　systems　(SS7,　SS8　and　SS9)　had　a　better　effect　on　peak　flow　and　full　flow　time　in　C8　pipeline　than　other　simulation　scenarios.　Combinations　of　green　roofs,　vegetative　swales,　continuous　permeable　pavement　systems　and　reservoirs　(SS9)　had　the　minimum　full　flow　time　and　latest　peak　time　in　the　short　duration　rainfall　event.　Combinations　of　green　roofs,　vegetative　swales　and　continuous　permeable　pavement　systems　(SS7)　had　the　minimum　full　flow　time　and　latest　peak　time　in　the　long　duration　rainfall　event.　Three　combinations　(SS7,　SS8　and　SS9)　had　no　distinct　differences　on　pipeline　flood　control　in　the　middle　duration　rainfall　event.　©　2019,　Editorial　Board　of　China　Environmental　Science.　All　right　reserved.