Abstract: According to the monitoring results ofambient air aerosol in the surrounding area of nuclear power plants, uranium mining areas, control areas without large-scale release of radioactive materials,statistical analyses were carried out for gross α, gross β and ⁷Be in aerosol samples from around Daya Bay NPP, Yangjiang NPP, Taishan NPP (not running), uranium mining areas, Guangzhou City, Maoming City and Shaoguan City. The changes of aerosol radioactivity levels before and after the operation of nuclear facilities, and those for Fukushima nuclear accident, were compared.

Key words: Aerosol, Radioactive level, Gross α, Gross β, ⁷Be