Abstract: While walking along 17 typical streets in Guangzhou in the winter,the authors collected VOCs samples and got them analyzed hereafter in the lab;PM\-\10\ and CO were also measured directly during the sampling periods by portable analyzers.Although air quality index in the sampling periods is not so high,the results indicated that pedestrians’ exposure levels were relatively high for some toxic VOCs(like benzene) and PM\-\10\ 71% and 77% of the detected levels exceeded limits in relevant air quality standards for benzene and PM\-\10\,respectively.A comparison of different classifications of streets showed that the average levels of benzene and methylbenzene were highest for part-time walk-only streets,while levels of other compounds under study (except tetrachloroethylene) were with increasing trend from walk-only streets to part-time walk-only streets and to traffic streets.The difference of VOCs levels between old and new urban streets,however,were much more significant.Major sources of VOCs found in the roadsides might include traffic emission and solvent evaporation,but further investigation is needed for a sound source apportioning.