Pedestrians　have　a　significant　effect　on　capacity　of　signalized　intersections　with　channelization　island.　This　paper　analyzes　the　regular　arrival　pattern　of　pedestrians　and　shows　that　the　arrival　frequency　of　pedestrians　is　consistent　with　negative　binomial　distribution.　When　comparing　different　processes　of　pedestrians　crossing　between　signalized　intersection　with　channelization　island　and　the　typical　one,　pedestrians　spillover　quantity　mainly　influenced　by　the　total　amount　of　traffic　volume,　direct　proportion　changes　with　the　traffic　volume　volatility.　It　also　discusses　the　capacity　calculation　of　right-turn　lane　with　accept　gap　model　and　how　pedestrians　influence　the　capacity　of　the　right-turn　lane.　Pedestrian　influence　of　straight　lane　capacity　is　focused　on　headway　and　a　sound　sample　typical　value　and　variance　from　P-P　figure　found　that　the　randomness　of　intersection　capacity　of　Dongda　and　Wuyi　Road　signalized　intersection　in　Fuzhou　meet　the　normal　distribution　well.　©　2011　ASCE.