Through　the　analysis　on　the　characteristics　of　pedestrians　crossing　behavior,　pedestrians＇　acceptable　waiting　time,　and　pedestrians＇　choice　of　vehicles　critical　time　interval　at　unsignalized　mid-block　crosswalks　,　pedestrian　crossing　resistance　model　has　been　built,　and　then　the　waiting　time　with　the　resistance　coefficient　15%　has　been　worked　out.　In　the　end,　pedestrian　level　of　service　at　unsignalized　mid-block　crosswalks　division　standard　has　been　established　based　on　pedestrians＇　real　feeling.　This　method　combines　the　advantages　of　traffic　conflict　and　pedestrians＇　feeling,　so　that　it　can　overcome　the　shortcoming　of　the　previous　studies,　including　the　subjectivity　of　pedestrians　experience,　the　complexity　of　index　and　practical　operational　difficulties.