13-year-old girl is depressed, the possible reasons for study pressure, less parental care, etc., if it appears for a short time, generally depressed mood, can be relieved by self-adjustment way. But if the 13-year-old girl depression symptoms last longer and in more than 2 weeks, may be depression, mild can also be relieved through self-adjustment, while moderate, severe depression generally need to give drugs, psychological, physical and other treatment to relieve. 1, self-adjustment: first of all, girls need to ensure sufficient sleep, try to maintain regular rest and rest, regain their hobbies, but also appropriate to expand their interests, such as Painting, listening to music, etc. You can also choose to participate in sports, such as playing badminton, swimming, etc., because exercise can improve the secretion of endorphins in the brain, which can help alleviate depression, keep away from the source of depression, reduce the pressure of study, and try to contact with optimistic, upbeat and positive people; 2, medication: commonly used drugs are 5-hydroxytryptamine reuptake inhibitors, including sertraline hydrochloride tablets, fluoxetine hydrochloride capsules, paroxetine hydrochloride tablets, oxalate 3, psychotherapy: commonly used treatments include cognitive-behavioral therapy, psychoanalytic therapy, drawing therapy, narrative psychotherapy, etc., which can be used with medication; 4, physical therapy: commonly used physical therapy methods include transcranial magnetic stimulation therapy, music therapy, relaxation therapy, feedback therapy, etc. If the symptoms are severe, self-injury and suicidal behavior, you can consider the use of non-convulsive electroconvulsive treatment. Depression is often characterized by persistent depressed mood, decreased interest and other symptoms, insomnia, early awakening, anxiety, decreased interest and other symptoms, but also slow thinking, slow speech and other performance, more serious will be negative and pessimistic, mild will feel that life is meaningless, while moderate and severe may appear self-injury, suicidal thoughts or behavior.