Non-suicidal self-injury （NSSI） is a poorly adapted emotional regulation strategy that is commonly seen in the adolescent population and seriously endangers the physical and mental health of adolescents. Attachment has a profound impact on the psychological development of individual adolescents and is of great significance in understanding their emotional regulation methods. This article reviews the interrelationships among attachment， emotional regulation， and NSSI， aiming to provide reference for the prevention and control of adolescent NSSI.