To　solve　the　problem　of　the　backwardness　of　seismic　design　of　urban　water　supply　pipelines,　performance-based　seismic　design　was　put　forward.　The　seismic　fortification　standard　of　urban　water　supply　pipe　was　selected　as　a　starting　point,　the　interface　failure　probability,　pipeline　damage　rate　and　post-earthquake　water　supply　amount　were　selected　as　the　three　measure　indexes　to　divide　the　performance　level,　and　the　advice　for　seismic　performance　goals　of　different　water　supply　pipes　under　different　fortified　seismic　conditions　was　given.　Then,　the　hydraulic　performance　of　different　service　function　pipe　network　systems　after　earthquake　was　analyzed.　Results　show　that　the　performance-based　seismic　design　can　further　identify　the　weak　links　in　the　water　supply　network,　which　provides　a　preliminary　reference　for　realizing　performance-based　seismic　design　of　urban　water　supply　pipe　©　2019,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.