Abstract: A survey of environment radioactivityin and around a uranium enrichment area of approximately 700 km² in GuangdongProvince has been made. The result shows that the gamma radiation dose rate is far higher than the provincial natural radioactivity level. ²³⁸U, ²³²Th, ²²⁶Ra in some soil samples are more concentrated than thebackground in Guangdong. There is a river with too higher content of radionuclide, of which U is 15.7 times than the reported value for Beijiang River in the province. The U concentration in effluents from some uranium ore occurrences anda hydrometallurgy factory exceeds the nuclear industrial limit.

Key words: Uranium enrichment area, Radioactivity, Gamma radiation dose rate