The purposes of this study were to survey the underlying behavioral beliefs that hikers hold about fire-use activities and to examine the theoretical organization of the expectancy-value model which was developed by Fishbein and Ajzen in 1975. Two national parks, Yushan and Shei Pa, were selected in which to conduct the study. Hikers were selected at a trailhead using the next-to-pass rule on each sampling day. The survey started on 1 September 1998 and ended on 31 August 1999. Results show that cooking and building campfires were the 2 potential risk sources of fire danger in these 2 parks. Hikers at both sites had strong negative attitudes toward smoking, and slight negative attitudes toward cooking and building campfires in Yushan, while in Shei Pa these attitudes were slightly positive. Additionally, in both study sites, application of the expectancy-value model appeared to have predictive validity in explaining a large portion of fire-use behavior.