Non-suicidal self-injury(NSSI)is the behavior in which an individual intentionally inflicts harm on his or her own body without suicidal intent.In recent years,NSSI has been on the rise globally,especially among adolescents,which is closely related to the age characteristics,psychological and biological characteristics,and social pressure.Some studies have shown that NSSI is an independent risk factor for suicidal behavior,which not only poses a serious impact on the health of adolescents,but also imposes a heavy burden on families and society.Therefore,this article systematically reviews relevant literatures on NSSI,mainly elaborating the epidemiological status,influencing factors and interventions.We aim to provide a scientific basis for the early identification of high-risk populations,the prevention of NSSI in adolescents and the development of corresponding intervention strategies