To　improve　the　traffic　efficiency　of　bus　at　a　group　of　intersections　and　reduce　their　delay,　this　paper　develops　a　speed　guidance　strategy　for　buses　under　travel　time　control　at　intersection　groups.　The　approach　considers　the　influence　of　bus　departure　time,　bus　station　arrival　rate,　and　bus　station　dwell　time.　Simulation　experiments　are　carried　out　on　three　consecutive　intersections　along　Jinshan　Avenue　in　Fuzhou,　China.　Results　show　that　the　average　travel　time　of　buses,　the　average　delay　of　buses,　and　the　average　delay　per　capita　in　the　priority　direction　are　reduced　by　5.5%,　9.9%,　and　9.4%,　respectively.　The　optimal　rate　of　the　average　number　of　bus　stops　reached　15.2%.　The　indicators　of　the　non　-priority　direction　of　social　vehicles　are　not　significantly　affected.　It　shows　that　the　efficiency　of　buses　has　improved　after　implementing　the　speed　guidance　strategy　at　the　intersection　groups　without　affecting　the　social　vehicles　as　far　as　possible.