Urban　Traffic　Link　Tunnel　(UTLT)　is　a　new　kind　of　underground　transportation　system.　Because　it　is　usually　located　in　the　downtown　area,　the　fire　risk　level　is　higher　than　the　common　road　tunnel.　So,　it　is　very　important　and　necessary　to　research　the　smoke　control　technique　or　strategy　for　the　UTLT.　In　this　study,　the　smoke　control　strategy　of　a　designed　fire　scenario　in　Beijing　CBD　UTLT,　which　would　be　constructed,　was　simulated　and　studied　by　the　numerical　software　of　ANSYS-FLUENT　6.3.26.　The　settings　of　boundary　conditions　were　also　investigated,　analyzed　and　validated.　By　numeric　simulation,　the　optimal　smoke　control　strategy　was　found.　In　this　condition,　all　of　the　smoke　can　be　excluded　quickly,　and　people　can　evacuate　safely.　The　research　method　of　smoke　control　in　this　UTLT　can　be　a　useful　reference　of　fire　protection　design　for　other　complicated　tunnels.