This paper presents a systematic review of extant research investigating the effectiveness of Internet-based group cognitive behavioral therapy （IGCBT） for depression and anxiety symptoms with an emphasis on the treatment modalities， treatment protocols， efficacy and mechanism， together with a summary of research limitations and suggestions for future research. Cognitive behavioral therapy （CBT） is a structured， short-term and present-oriented psychotherapeutic treatment， its Internet- and group-delivered modalities have led to its wider application， and has proven to be clinically effective in alleviating depression and anxiety symptoms caused by different diseases， whereas some drawbacks have been reported. Thus this paper elaborates the clinical application， therapeutic effect and underlying mechanisms of IGCBT intervention for depression and anxiety symptoms， so as to provide references for its future application. ［Funded by the Natural Science Foundation of the Inner Mongolia Autonomous Region （number， 2019MS03038）