Based on monitoring the runoff water quality from the Xichang College section of road to airport,we analyzed characteristics of runoff on the road surface.The result showed that the the concentration of pollutants in the initial runoff were higher,and the highest concentration of suspended solids（SS） and chemical oxygen demand（COD）were 74 mg/L and 189 mg/L,respectively.The first flush effect was obviously observed.The concentrations of pollutants in road runoff was decreased with rainfall after reaching a high peak.The characterizes of runoff might be closely related to natural weather,rainfall time,traffic,road cleaning and so on.Considering these factors,this paper discussed and recommended effective methods of pullulation control of road runoff.