Impotence patients can have intercourse when they have a morning erection, but some of them are unable to complete the whole process of intercourse. Morning erection is the unconscious erection of the penis in the morning, which is not governed by actions, situations or thoughts. Some patients with erectile dysfunction due to psychological factors may have morning erections and can have intercourse if they are hard enough. For impotence caused by neurological damage, trauma, heart disease, diabetes and other factors, it is possible to have morning erections, but the morning erections are not hard enough. For neurological injuries, such as penile trauma leading to arteriovenous fistula, cerebrovascular accident, etc., resulting in impotence without morning erection phenomenon. It is recommended that patients with erectile dysfunction should go to the hospital for examination and treatment as soon as possible. Can be under the guidance of the doctor, through psychological treatment, medication and other treatment modalities, in order to improve the symptoms as soon as possible.