摘要:During the 2020–2021 COVID-19 pandemic, youth suicide increased in Japan (NPA, 2021). With the spread of digitalization, youth increasingly use the internet to compensate for loneliness. It has been suggested that such unsupervised use of the internet might increase exposure to sexual exploitation and cyberbullying (Yang, 2021). Trauma care for youth exposed to these pandemic circumstances is needed. We aimed to develop an online program based on the theory behind cognitive processing therapy for adolescents and young adults with post-traumatic stress symptoms that could allow youth to undergo trauma care equally without regional disparity, with the aim of preventing youth suicide. Method: We developed a beta version of cognitive processing therapy for youth by referring to previous studies. We subsequently asked four trauma experts to use the program in various clinical settings. Through the iteration of these processes, we developed the online version of the program. Results: We summarized the characteristics of the Japanese traumatized youth as dissociation symptoms, selfharm/suicidal behaviours, and repeated harm. Taken into these characteristics, this program was designed to prevent self-harm and suicide by inclusion of emotional control and coping skills to ensure safety. Furthermore, the online design is also intended to provide extensive care for youth, who have a low medical consultation rate. Conclusions: This program is expected to contribute to the care of youth. A preliminary trial will be needed to further examine the feasibility and safety of the program.