〔Abstract〕 Depressive disorder can cause damage to the social function of adolescents and bring heavy burden to the family and society. Dietary behavior is closely related to mental health, and depressive disorder can increase the risk of poor dietary behavior. At the same time, adolescence is a critical period for eating disorders, and patients with adolescent depression are more likely to have a series of bad eating behaviors. The combination of poor eating behaviors can negatively affect the treatment of the disease and the future development of the adolescent. This article aims to review the current status and potential mechanisms of unhealthy eating behaviors in adolescents with depression, in order to provide a theoretical basis for future prevention and early intervention.