Rinjani Mountain in West Nusa Tenggara is famous destination for travelling which has Instagram able for tourism photos. Its popularity because many social media tolls which easy to uploading photos. Instagram is a digital media for sharing photos and videos to others. This paper aimed are (a) develop a sentiment classifier required method based on Lexicon-Based method of conducting a dictionary-based sentiment analysis and (b) Identifying the sentiments of each opinion words contained in the response and hashtag data. The results are posting photo or picture in Instagram make positive comment from visitor and the impact is increasing visitor to Rinjani Mountain. The trial and evaluations system created be able to provide information about positive, negative and neutral opinion of the community on tourism in Mount Rinjani.