Not getting hard after drinking alcohol may be caused by inhibiting the nervous system, atherosclerosis, erectile dysfunction and other reasons. 1. Inhibition of the nervous system: when too much alcohol is consumed in the body, alcohol may inhibit the nervous system, which will make the nerves controlling the erectile function abnormal, and it can lead to erectile dysfunction. If this happens occasionally, it is a normal phenomenon. 2. Atherosclerosis: If there is long-term alcohol consumption, it may lead to atherosclerosis, which makes the diameter of the atherosclerotic blood vessels in the penile area gradually become smaller, which will affect the blood congestion of the penis, thus inducing erectile dysfunction disease. 3. Erectile dysfunction: not getting hard after drinking alcohol may also be related to erectile dysfunction, such as prepuce glans, penile curvature deformity, local trauma, penile sclerosis and so on. When the patient bleeding drink hard to get up, should be timely hospital to improve the relevant examination, clear cause and actively cooperate with the doctor for treatment.