Abstract: The protection of six flower tea on oOH -induced DNA damage were researched qualitatively and quantitatively through fluorescent spectrum scanning. Result showed that the protection of osmanthus fragrans tea, mixed flower tea, green tea and paenoia albiflora tea were better than that of rosa rugosa(red) and tropaeolum majus tea, and the protection of six flower tea were all enhanced with the improvement of concentration (0~1mg/mL). The stability and repeat of fluorescent spectrum scanning were both good.