Abstract： Objective To investigate the prevalence of dental erosion and associated drinks in 12-year-old adolescence of Beijing. Methods A random sample of 12-year-old adolescence of Beijing ( n =844) was examined for dental erosion and required to fill a questionnaire of acidic drink intake. The grade criteria suitable for the survey of the dental erosion was used in the study. Results The prevalence of dental erosion was 61.8%, of which mild enamel was 74. 1 %, severe enamel erosion 24. 9% and dentine erosion 1.0%. Statistic analysis showed that a large amount of intake of carbonated drink or juice were risk factors.Conclusions Attention should be paid to the prevalence of dental erosion among Chinese adolescence.