As　the　total　water　resources　consumption　control　and　carbon　mitigation　continuous　improvement,　the　weak　water-carbon　incorporate　management　is　increasingly　exposed.　In　this　study,　a　water-carbon　nexus　assessment　framework　is　proposed　to　analyze　the　nexus　relationship　between　water　consumption　and　carbon　emission,　and　distinguishes　the　coupled　water-carbon　transmission　intensity　and　the　transfer　paths　under　regional　and　industrial　scales.　According　to　the　practical　input-output　table,　water　consumption,　and　carbon　emission　information,　the　framework　is　applied　to　Beijing-Tianjin-Hebei　urban　agglomeration　(BTHUA),　a　population,　resource,　and　trade　intensive　area　of　China.　Inter-regional/intra-regional　water　consumption　and　carbon　emission　transfer　fluxes　between　sectors,　the　pairwise　ecological　relationship,　and　the　water-carbon　nexus　were　analyzed.　Results　indicated　that　the　water-carbon　transfer　indexes　from　Hebei　to　Beijing　and　Tianjin　were　161.85　kg/m(3)　and　113.88　kg/m(3)　in　the　study　period,　along　with　the　most　water　consumption　and　carbon　emission,　and　the　worst　water-carbon　nexus.　From　the　industrial　perspective,　electricity　and　gas　supplying　industry　provided　7.8%　and　29.1%　of　the　total　carbon　transfer　in　Tianjin　and　Hebei,　as　the　most　key　node　sectors　on　the　water-carbon　nexus　in　the　BTHUA.　The　research　provides　valuably　supporting　the　adjustment　of　the　existing　urban　agglomeration　water-carbon　nexus　management　schemes.