If you drink too much alcohol and can’t get hard, you can drink a lot of water to dilute out the alcohol in your body, or go to the hospital and let the doctor prescribe medication to relieve alcohol, but you should not use drugs such as sildenafil. Men who drink more alcohol will cause the blood vessels in the whole body to dilate, blood flow to the whole body, the penis congestion is relatively slowed down, so there will be hard to get up. Another reason is that drinking alcohol will have an inhibitory effect on the brain nerves, reducing the brain’s sensitivity to sexual stimulation, which will make the penis normally unable to get an erection or easy to get weak after erection. So for the erection after drinking too much alcohol can not get an erection, you can drink a lot of water to dilute the blood alcohol, or go to the hospital for treatment, but after drinking alcohol should avoid taking drugs such as sildenafil, which will increase the chances of adverse reactions, may cause discomfort. Patients need to consult a doctor for examination and treatment if they feel unwell.