Objective To explore the effects of family engaged art therapy on emotion regulation and parent child relationships in adolescents with mood disorders. Methods Seventy adolescents with mood disorders were divided into two groups:a control group (n=35) receiving conventional treatment and care, or an observation group (n=35) receiving family engaged art therapy intervention for a total of 8 sessions. Emotion regulation and parent child relationships were compared between the two groups before and after the intervention.ResultsAfter the intervention, the observation group showed significantly higher score in the reappraisal dimension and lower score in the expression inhibition dimension of the Emotion Regulation Scale compared with the control group (both P<0.05). The observation group also demonstrated significantly higher scores in the dimensions of affect control, positive thinking, and family support in the Resilience Scale for Chinese Adolescents, as well as in the dimensions of trust and communication, and total score of the Inventory of Parent and Peer Attachment, compared with the control group (all P<0.05). ConclusionFamily engaged art therapy can improve emotion regulation ability of adolescents with mood disorders, and also enhance parent child attachment and family relationships.