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Digital cognitive behavioral therapy (DCBT) is an online form of cognitive behavioral therapy delivered through digital means. It utilizes interactive online, electronic, mobile, and internet-based media, offering treatment through simple operational procedures and highly structured, interactive formats such as animations, videos, audio, and text. DCBT has become an important tool for adolescent psychological intervention due to its high accessibility, low treatment cost, strong privacy protection, and efficient data collection capacity. Several Western countries have achieved significant progress in addressing adolescent mental health problems, particularly in the design and implementation of DCBT intervention programs. DCBT holds promising feasibility and application value in interventions for adolescent depression, anxiety, and post-traumatic stress disorder. However, limitations remain, including small sample sizes, heterogeneity in intervention protocols, short follow-up durations, and constraints in adherence management. Future research in China should include more high-quality studies with long-term follow-up, as well as improvements in the integration of technologies and therapeutic protocols, to promote the standardized and evidence-based application of DCBT in adolescent mental health services.