According　to　the　new　needs　of　riverbasin　management,　the　deep　integration　of　new　generation　information　and　communication　technology　riverbasin　monitoring　and　management,　and　the　establishment　of　a　digital　twin　riverbasin　to　achieve　accurate　simulation　of　riverbasin　simulation　and　intelligent　management　decision-making　have　become　hot　spots　in　the　industry.　Starting　from　the　basic　concept,　motivations　and　innovative　management　of　the　digital　twin,　this　paper　puts　forward　to　the　basic　definition　and　characteristics　of　the　digital　twin　riverbasin,　the　technical　framework　of　digital　twin　riverbasin,　and　the　key　technologies　and　the　facing　challenges　of　the　digital　twin　riverbasin,　and　proposes　a　digital　twin　riverbasin　triangle　design　model　based　on　the　characteristics　of　the　riverbasin　scenario.　©　2022　IEEE.