This　paper　aims　at　developing　a　Level　of　Service　(LOS)　model　for　unsignalized　intersection　crosswalks　for　pedestrians　from　the　perspective　of　the　pedestrian＇s　perception　of　comfort　and　safety　in　unsignalized　intersection　environment.　Firstly,　the　potential　primary　factors　influencing　pedestrian　LOS　at　crosswalk　were　summarized　from　three　respects:　traffic　conflicts,　crossing　facilities　and　delay.　Secondly,　data　for　the　model　were　collected,　including　459　participants＇　real-time　sense　of　comfort　and　safety　when　they　crossing　the　11　selected　intersection　crosswalks　and　the　design　and　operational　characteristics　of　the　selected　intersections.　The　selected　crosswalks　were　typical　of　those　prevalent　in　the　urban　areas　of　China,　and　the　participants　of　questionnaire　survey　covered　a　broad　cross　section　of　Chinese　population　of　pedestrians.　Based　on　the　survey　data,　Pearson　Correlation　analysis　and　step-wise　regression　analysis　were　carried　out　to　develop　pedestrian　LOS　model　for　unsignalized　intersections.　A　reliable,　statistically　calibrated　pedestrian　LOS　model　for　unsignalized　intersections　was　developed,　suitable　for　application　in　the　vast　majority　of　Chinese　urban　areas.　The　study　revealed　that　the　factors　significantly　influencing　pedestrian　LOS　at　unsigmalized　intersections　included:　left　turning　bicycles　from　side　streets,　through　bicycles　from　side　streets,　right　turning　bicycles　from　side　streets,　left　turning　bicycles　approaching　from　the　street　parallel　to　the　crosswalk,　through　bicycles　from　the　approach　opposite　to　the　crosswalk,　right　turning　bicycles　from　the　street　parallel　to　the　crosswalk,　through　bicycles　from　the　approach　opposite　to　the　crosswalk　and　the　presence　of　the　median.