General electroconvulsive treatment of depression is very effective. Patients in severe depression appear impulsive injury, suicide or extended suicide, that is, homicide, by killing others, through the legal sentence to achieve the purpose of suicide is called extended suicide. For schizophrenia, impulsive destructive behavior, mania, depression several types of heavy diseases, in severe cases generally need electroconvulsive therapy for intervention, electroconvulsive therapy has a curative effect. Regarding electroconvulsive therapy for depression, it is only for severe and very severe depression, when there are suicidal tendencies or have had suicidal behavior, or have had suicide without success, in this case the doctor will decide whether electroconvulsive therapy is needed according to the situation. For mild and moderate depression, medication and psychotherapy are usually the main treatment. Electroconvulsive treatment is the most severe case, and doctors need to exclude somatic diseases before finally deciding to sign an informed consent form and take electroconvulsive treatment.