The research on tourists' behavior is the basis for tourism marketing and planning. Mount Taibai is a mountain located on the border between Mei, Taibai and Zhouzhi counties in the south west of Shaanxi Province, China. The mount's highest point, Baxian Tower, rises to a height of 3767.2 meters and is the tallest in the Qinling Range, as well as the watershed between the Han River and Wei River. Mount Taibai is also the highest mountain in Eastern China. People are drawn to backpacking primarily for recreation, to explore places that they consider beautiful and fascinating, many of which cannot be accessed in any other way. A backpacker can travel deeper into remote areas, away from people and their effects, than a day-hiker can. This paper aims to explore the travel behavior of backpackers of Mountain Taibai. The authors choose the relevant factors of backpackers through online BBS, and adopt the method of network text data research, content analysis and Word Parser ROST software. The authors select the main post classification on the BBS of Miao Xueling travel website and study the posts of backpackers of the Taibai Mountain in Shanxi province in the website forums. The high frequency words about the backpackers' behavior are found from five aspects including the "motivations", the "routes and places", the "feelings", the "preferences and attitudes", and the "independence". Nouns mainly displays in places and scenic spots. Verbs mainly reflect the process of mountain climbing. Adjectives mainly reflect the feeling and perception of backpackers. The result shows that climbing to the top of the mountain, crossing over the mountain and trekking are the motives of backpackers in Taibai mountain; "Dayehai lake" and "Baxiantai Platform" are the most popular scenic sites; the frequency of the words of south slope site names is higher than those in north slope; backpackers are of higher self-dependence; they pay much attention to the safety problems during the climbing; they often prefer sceneries like snow, forests, white clouds and the diverse species.