Impotence may be cured in four years. Impotence usually refers to the inability of the penis to maintain an erection sufficient for satisfactory sexual intercourse, and the time to cure depends on the patient’s condition, the cause of the disease, and whether or not active treatment is carried out. Penile erection is a complex process that involves multiple systems in the human body, causing impotence has psychological factors such as mental stress; there may also be organic lesions, such as androgen levels are too low and other endocrine factors, or diabetes, hypertension caused by neurological and vascular lesions caused by impotence, do not rule out anti-hypertensive drugs or antipsychotic drugs induced impotence. Clinical impotence is usually treated with medication such as sildenafil citrate tablets and tadalafil tablets as prescribed by the doctor; if the impotence is caused by psychological factors, the patient needs to cooperate with psychological treatment. If the impotence is caused by other diseases and the symptoms are serious, surgery is needed. The treatment of impotence usually takes a certain amount of time, if the impotence is caused by diabetes, prostatitis and other diseases, the treatment time is longer, four years may not be able to completely cure, and even need to take medication for life. Impotence patients should go to the hospital as early as possible for examination, to clarify the cause of the disease and then take corresponding treatment measures.