Abstract: In order to study the effects of ultraviolet radiation on 2B-level carcinogen bromate in drinking water, the control effects of C-waveband on bromate were studied by using water simulated test. The results showed that the concentration of bromate gradually decreased when the dose of ultraviolet radiation. In the ultraviolet radiation test with the initial concentration of bromate of less than 400 μg/L, the removal rate of bromate was 40%-45%, which indicated that ultraviolet radiation was suitable for removing bromate from water.