Objective: The purposes of the fall prevention program were to increase olderpeople's knowledge, belief, self-efficacy, and physical function related to fall prevention. In addition, the prevalence rate of fall was expected to decrease. Methods: A pre-post research design and purposeful sampling was employed in the study. Participants were recruited from an elderly institution and a community center for elderly in northern Taiwan. The intervention program contains 16-week sections, including health education, exercise training, and safety inspection of home environment. A process evaluation was also conducted. Result: Study results indicate that the scores of knowledge, self-efficacy related to fall-prevention and muscle strength of lower limbs were significantly increased among elderly institutionalized residents, after fall-preventive intervention. Among community-dwelling seniors, not only the scores of belief, self-efficacy related to fall-prevention were significantly improved, but also did the reaction speed, muscle strength of lower limbs and hand grasp. Yearly fall prevalence rate was decreased 9.96% and28% for elderly institutionalized residents and community-dwelling seniors, respectively. In addition, participants of both groups felt satisfied with the fall-preventive program. Conclusions: The preliminary results reveal the effectiveness of implementing fall-preventive program in institution as well as community. Further studies are needed to include a control group to identify effective elements.