Belimbing wuluh and passion fruit is a plant that can be used as atraditional medicine. Sour taste in starfruit and passion fruit is a chemical factor tostimulate the speed of saliva secretion. Saliva is a complex, unsweetened mouthfluid produced by the salivary glands. Saliva acidity is the cause of cavities. Thisstudy aims to determine the difference of consuming starfruit and passion fruitjuice to salivary pH changes.The type of research used is descriptive quantitative. The researchmethod used in this research is Quasi Experiment. The population in this study isthe residents of Bhakti Husada Dormitory, in this study large samples taken are 64people with sampling technique with Simple Random Sampling.The results showed the average salivary pH consuming starfruit juicewuluh increased by 0.78 from 7.01 to 7.09 or from neutral to alkaline, while theaverage saliva after consuming passion fruit juice increased by 0.66 Ie from 6.98to 7.04 or from nertal to base. Conclusion consuming star fruit juice ciderumgmore effective to raise saliva pH than consuming passion fruit juice.