Modified electroconvulsive therapy （MECT）， a treatment involving electrical stimulation of the brain to induce a seizure-free state， has demonstrated significant efficacy and favorable safety in the management of mood disorders in adolescents. However， its clinical application faces challenges due to stigma， discrepancies in clinician perceptions， inconsistent international policies， and insufficient research evidence. This review systematically summarizes the effectiveness， safety， influencing factors， implementation barriers， and current clinical guidelines for MECT in adolescents with mood disorders. The aim is to provide clinicians with a comprehensive understanding of MECT， clarify misconceptions， optimize clinical decision-making， and offer recommendations to promote standardized use of MECT in adolescent populations.