Bohai　Rim　is　the　most　advanced　economic　development　zones　in　northern　China,　however,　Bohai　harbor　is　also　the　most　severely　polluted　and　ecologically　damaged　coast.　At　this　exact　economic　and　ecological　joint,　China　and　Singapore　governments　proposed　to　develop　an　environmental　friendly,　resources　saving,　ecological　and　livable　city　over　the　30　sqkm　abandoned　saline-alkaline　land,　as　a　model　that　could　be　applied　or　duplicated　for　other　cities　development.　This　paper　took　Sino-Singapore　Tianjin　Eco-city　as　the　case　to　study　the　new　model　of　sustainable　urban　water　resource　planning.　By　analyzing　the　differences　between　water　resource　baseline　in　the　region　and　Key　Performance　Indicators　(KPI)　of　Eco-city＇s　water　environment　vision,　a　sustainable　urban　water　use-reuse　system　was　established　to　better　suit　the　available　water　resources　with　various　consumers.　The　water　mass　balancing　was　carried　out　and　detailed　implementation　approaches　towards　sustainable　water　resources　use-reuse　were　proposed,　giving　fresh　water　scarce　coastal　cities　a　new　model　in　planning　the　water　resources　sustainably.