Reducing　carbon　emissions　is　key　to　achieving　the　13th　UN　sustainable　development　goals.　With　the　acceleration　of　informatization　and　urbanization　in　the　＂Belt　and　Road　Initiative　＂　(BRI)　countries,　it　is　necessary　to　explore　the　impact　of　ICT　and　urbanization　on　carbon　emissions　in　the　BRI　countries.　This　paper　uses　the　Driscoll-Kraay　panel　regression　method,　multi-chain　mediation　effect　model,　and　panel　moment　quantile　regression　method　to　study　the　influence　channel　and　heterogeneous　impact　of　ICT,　urbanization,　and　their　interaction　on　carbon　emissions　in　42　selected　BRI　countries.　The　main　empirical　results　reveal　the　inhibition　of　ICT　and　the　promotion　of　urbanization　on　carbon　emissions.　Moreover,　the　integrated　development　of　ICT　and　urbanization　contributes　to　reducing　carbon　emissions.　Industrial　structure　upgrading　and　energy　intensity　are　found　to　be　the　channels　through　which　ICT,　urbanization,　and　their　interactions　affect　carbon　emissions.　In　addition,　the　impact　of　ICT,　urbanization,　and　their　interaction　on　carbon　emissions　varies　with　different　measurement　indicators　and　quantiles.　Therefore,　it　is　suggested　that　BRI　countries　should　formulate　appropriate　ICT　development　policies　according　to　their　conditions,　strengthen　ICT　application,　and　especially　promote　the　integrated　development　of　ICT　and　urbanization,　to　achieve　sustainable　urban　development.