Abstract: Atmospheric dry and wet deposition samples were collected around Xinghua Bay in one year,and deposition fluxes of Cd,Pb,Zn and Cu in these samples were estimated.Season variations of Cd,Pb,Zn and Cu deposition fluxes were analyzed,and lead isotope was used to trace atmospheric particles source.The results show that seasonal variations of heavy metals dry deposition fluxes are small,but that of heavy metals wet deposition fluxes are obvious.Cd and Cu dry deposition fluxes hardly vary in different seasons,while Pb and Zn dry deposition fluxes vary with seasons because rainfall gets rid of some atmospheric particles.Atmospheric wet deposition fluxes of Cd,Pb,Zn and Cu are all influenced by rainfall,and they are related with season and wind speed.Atmospheric wet deposition fluxes of Cd,Zn and Cu are more than dry deposition fluxes of them,so atmospheric wet deposition of heavy metals to Xinghua Bay is more important.However,Pb deposition to Xinghua Bay is mainly particle-associated.According to the analysis of stable lead isotope,particle-associated heavy metals in Xinghua Bay mainly come from industrial activity.