Nowadays, bullying behavior is very common, especially among teenagers and young adults. Bullying is intentionally aggressive behavior, which aims to make other people feel uncomfortable, cornered or intimidated. Bullying has a very negative effect on the growth and development of teenagers. For example, increased depression and stress, low self-esteem, sleep disorders, and the emergence of self-harm behavior and suicide. Self-harm is a detrimental action in the form of self-harm. And if it continues, it will lead to more serious problems such as suicide. The aim of this systematic review is to describe the causes of self-harm in adolescents who experience bullying. The method used in this paper is to use a systematic literature method originating from the Google Scholar and Scopus databases. With a publication range from 2019 to 2023. These journals use English and Indonesian in full-text form. After a series of data sorting processes, 18 papers were obtained that met the inclusion criteria. With the results of three main factors that influence self-harm actions in adolescent victims of bullying. Among them are psychological, social and physical factors.