This paper reports the investigation results of natural radioactivity level in riv-er,lake,reservoir,spring,tap water and offshore water in Guangdong Province(includeHainan province).

• 本文报道了广东省（含海南省）江河、湖泊、水库、温泉、自来水和近海海域海水中天然放射性核素浓度的调查结果。