Abstract: Objective：The aim of the study is to evaluate the erosive effect on young permanent teeth enamel by carbonated beverage, fruit juice, tea drinks and lactate drinks. Methods：130 young permanent teeth were randomly divided into 13 groups, and were soaked in 12 beverages and deionized water respectively. A laser fluorescence system was used to keep a quantitative record. Results：By observing the dental erosion effected by the beverages before and after the experiment, a significant difference of demineralization was found in carbonated beverage and fruit juice (P＜0.05). But herbal tea and two kinds of lactate drinks did not show any significant erosive effect (P＞0.05). Conclusions：Most of the beverages can cause dental erosion of young permanent teeth. It is suggested that beverages consumption by children should be controlled.