Impotence refers to male erectile dysfunction, which involves a variety of brain, hormonal, emotional, neurological, muscular and vascular problems. Common causes include: Psychosomatic factors: The arousal of sexual desire is the first step to an erection, and when occupied by tension, anxiety and stress, the body suffers. In addition to the male’s own mental condition, the female partner and the environment also play an important role in it. A gentle and considerate female partner and a private and comfortable environment can better stimulate the male instinct. Past medical history: Erectile dysfunction (ED) and cardiovascular disease share common causative factors such as smoking, alcohol abuse, high blood pressure, hyperlipidemia, and diabetes. They disrupt nerve conduction and also block blood vessels, causing inadequate blood perfusion and damage to the corpus cavernosum, with the ultimate consequence that when a man wants to have satisfactory sex, he lacks sexual desire and has difficulty getting an erection, which is not hard enough and does not last long enough. These damages are usually difficult to reverse. Endocrine factors: Endocrine abnormalities make men weak. Testosterone drives libido and many bodily functions, and also maintains male personality traits, secondary sexual characteristics, energy, and stamina. Various congenital or acquired factors that impair testicular function, such as testicular hypoplasia, cryptorchidism, testicular trauma, radiotherapy, etc., may cause a decrease in testosterone secretion, impair sexual function and libido, and cause erectile dysfunction in men. Drug effects: Drugs are another factor that causes impotence. For example, a variety of antihypertensive drugs have negative effects that reduce blood flow to the penile arteries. Some medications that have an effect on hormone levels have an even more pronounced effect. Therefore, erectile dysfunction in men may be related to 1 or more causes, and if a problem has developed, it is important not to avoid the problem, but to visit a regular male doctor as soon as possible and choose a formal treatment option.