Abstract
This research was conducted to study the social media usage behavior of adventure tourist in Tak province : case study Teelorsu waterfall. The research findings showed tourists are the most popular in Facebook had experience 3-4 year period of use, average 3-4 hours per day. Time from 6:00 p.m. – 11:59 p.m. Device is smartphone and purpose to use social media for read review of adventure tourism activities, the reason is because of it is convenience and transactions can be made at any time. Adventure tourists are expected effectiveness of social media, the habit of using is easy search and actors influencing the use of social media.