Concentrations　and　profiles　of　polycyclic　aromatic　hydrocarbons　(PAHs)　were　measured　in　road　dust　and　soil　from　different　functional　urban　areas　in　Shanghai.　The　Sigma　PAHs　concentrations　varies　from　99.4　to　66900　ng/g　dw,　where　the　highest　one　is　found　in　dust　from　a　chemical　industry　producing　black　carbon.　The　mean　concentrations　of　Sigma　PAHs　for　dust　increase　in　the　following　order　of　land　uses:　park　and　lake　area　＜　waste　incineration　power　plants　nearby　＜　crossroads　along　arterial　traffic　＜　chemical　and　steel　industrial　nearby.　Diagnostic　ratios　of　Flu/(Flu+Pyr)　and　IDP/(IDP+BghiP)　indicate　that　most　PAHs　in　urban　surfaces　are　originated　primarily　from　biomass,　coal　and　petro-chemical　fuel　combustion.　The　contribution　of　individual　carcinogenic　PAHs　to　the　total　TEQs　decreases　in　the　following　order:　BaP　＞　DBahA　＞　BbF　＞　IDP　＞　BkF　＞　BaA　＞　Chr,　underlining　the　importance　of　BaP　as　a　surrogate　compound　of　a　PAHs　mixute.