Building　a　simulation　network　of　road　based　on　VISSIM　and　road　planning　of　Guangzhou　bio-island.　According　to　the　field　data　and　statistic　method　to　calculate　the　confidence　interval　of　the　calibration　Parameters,　at　the　same　time,　calibrating　and　verifying　the　simulation　model,　then　using　the　simulation　model　calibrated　to　play　the　simulation　and　collect　the　traffic　flow　data,　setting　up　four　traffic　organization　projects,　using　improved　AHP　method　to　evaluate　the　effect　of　whole　road　network　based　on　the　data　collected　on　the　simulation　network,　then　getting　the　sequence　of　all　kinds　of　traffic　organization　projects.