S Soft drink are beverages that are offred on the market. Soft drinks are non alcoholi beverages, ussualy carbonated and contain a sweetening agent. Soft drinks taht often we drink, including carbonated beverages reported as the etiology in the development of email erosion. Consumption of soft drinks in shot duration can still reduce the micro hardness of enamel. This study aims to determine the effect in salivary pH after consuming soft drinks on the faculty of Dentistry, Trisakti University student class of 2010. Data was collected by measuring the of saliva acidity with pH indicator strips (non-bleeding) in 2 groups, the group who drank carbonated beverages (experimental group ) and the group that drank mineral water (control group). Data were analyzed using paired samples t test, The results of measurements of the pH of saliva in the experimental