Treatment guidelines for PTSD in the West recommend exposure therapy as a first-line treatment for adult PTSD patients. Recently,in a randomized controlled study,we showed efficacy of prolonged exposure (PE) therapy for Japanese PTSD patients due to mixed traumatic events. Furthermore, we successfully implemented PE as a psychological intervention service in the victim support center of Tokyo under the auspices of the Tokyo metropolitan government. Benefits and the significance of the implementation of an evidence-based treatment for PTSD in the front-line victim support service were discussed.