The　efficient　recycling　of　road　materials　is　an　effective　way　to　reduce　carbon　emissions.　Approximately　400　million　tons　of　waste　asphalt　pavement　materials　is　generated　annually　in　China,　but　the　utilization　rate　is　less　than　50%.　In　this　paper,　a　whole　life　cycle　CO2　emission　calculation　model　for　recycled　asphalt　mixtures　is　established,　and　an　uncertainty　analysis　is　carried　out　on　the　basis　of　this　model.　The　steps　in　the　recycled　asphalt　mixture　stage　with　the　greatest　impact　on　emissions　are　identified.　The　life　cycle　of　asphalt　mixtures　is　divided　into　raw　material　production,　mixture　preparation,　material　transportation　and　construction　phases　based　on　the　carbon　emission　trends　in　the　four　phases.　First,　recycled　asphalt　mixtures　are　considered,　and　the　carbon　emissions　along　a　two-way　four-lane　highway　are　analyzed　based　on　the　relevant　carbon　emission　factor　and　other　known　data.　The　carbon　dioxide　emissions　of　each　stage　are　also　compared　to　identify　the　key　links　among　stages.　Then,　the　carbon　emissions　of　hot-recycled　asphalt　mixtures　are　compared　with　those　of　ordinary　asphalt　mixtures　and　cold-recycled　asphalt　mixtures　in　each　stage.　Finally,　an　analytical　uncertainty　study　of　recycled　asphalt　mixtures　is　conducted　using　uncertainty　modeling　in　different　scenarios.　Based　on　the　quantitative　results　of　the　carbon　emission　calculations　through　life　cycle　assessment　(LCA),　future　measures　for　reducing　carbon　emissions　from　recycled　asphalt　mixtures　are　proposed.