Abstract: Digital intervention can provide efficient,low-cost and low-stigma mental health services. They can make up for the shortcomings of traditional mental health services and expand the borders of mental health services. Currently,digital intervention has been used to prevent and tackle multiple types of mental health problems. Taking post-traumatic stress disorder as an example,four forms of digital intervention,video telehealth intervention,internet-based intervention,virtual reality intervention and mobile application intervention,can improve the health status of population to a greater or lesser degree. Digital intervention provides the following insights for accelerating the development of mental health services in China:strengthening the research on cultural adaptation of digital intervention,focusing on the digital mental health of children and adolescents,evaluating the long-term effects of digital intervention and their mechanisms,reinforcing the supervision of the side effects of digital intervention and its ethical review,integrating digital intervention into the public health service system,and strengthening cross-sectoral and multidisciplinary cooperation.

Key words: digital intervention, mental health services, digital China, posttraumatic stress disorder