Abstract: A single particle aemsol mass spectrometer was used to investigate variations of chemical species in fine aerosol particles during the typhoon “Soulik”transiting over Xiamen island in southern China.In this study,chem-ical species in the marine aerosols can be classified into 9 clusters as elemental carbon(EC),organic carbon(0C),intemally mixed elemental-organic carbon(ECOC),vanadium rich,high mas organic carbon(HMOC),sea salt,Ca-rich,Krich and Pb-rich particles.The results revealed that the vanadium-ich type emitted from ships was obvious in an increasing trend near typhoon entrancing,due to a large number of ships docked in Xiamen anchorage for sheltering.Counterclockwise flow winds bring land pollutions to Xiamen,resulting in peak particles pollution number concentration.Great storm would have washout the particulate matter quickly resulted in very low concentration of all the chemical specials during the typhoon arrival and the particle concentration in the atmosphere rised rapidly soon afterwands.Calcium-containing particles fom the burning of lubricating oil was most pronounced and the concentration increased after typhoon,which showed that automobile exhaust was still an important sourcesof local pollution in Xiamen.