The　intersection　is　the　critical　node　in　city,　and　has　important　influence　on　traffic　flow.　Whether　the　intersection　is　controlled　reasonably　is　the　key　to　the　safety　and　efficiency　of　the　intersection.　Because　of　the　current　urban　intersection　control　type　existing　unreasonably,　In　view　of　this　situation,　typical　intersection　is　selected　as　main　object　of　study.　LOS　is　chosen　as　Performance　Index,　8160　simulation　tests　of　different　levels　of　demand　are　designed　by　using　Traffic　simulation　software,　four　scenarios　with　5%,　10%,　15%,　and　20%　of　the　different　volumes　are　assigned　to　make　left　turns.　Each　test　is　made　respectively　with　signalized　intersection,　unsignalized　intersection　and　roundabout.　The　Choose　figures　are　given　as　the　base　of　the　intersection　control　types　and　comprehensive　benefits　for　intersection　analysis.　©　2011　IEEE.