Urban　land　is　the　primary　scene　for　manufacturing　and　services　providing,　through　which　the　economic　activities　and　trade　flows　amplify　and　cascade,　interacting　the　natural　and　human　systems.　However,　our　understanding　of　the　spatial　pattern,　remote　drivers,　and　coupled　interwoven　linkages　of　economic　sectoral　land　use　within　and　among　cities　remains　inadequate.　Here,　we　establish　a　novel　sectoral　urban　land　use　inventory　and　a　virtual　land　flow　network　for　13　cities　in　the　Jing-Jin-Ji　region　in　China　to　understand　urban　land　use　metabolism.　Results　show　highly　mixed　distribution　patterns　of　urban　sectoral　land　use.　Moreover,　spatial　heterogeneity　exists　among　industries　and　across　spatial　scales.　Urban　virtual　land　flow　presents　inverse　directions　compared　to　agricultural　land.　Results　also　reveal　inequalities　in　benefit-cost　and　supply　chain　networks　across　cities,　and　a　wide　range　of　control　and　exploitation　relationships　in　the　region.　Our　results　suggest　that　Beijing　and　Tianjin,　as　main　beneficiaries　in　the　regional　economic　network,　are　responsible　for　collaborating　intensively　in　Jing-Jin-Ji　region　and　will　be　key　in　promoting　sustainable　development.