A headache after drinking alcohol can be relieved by rest, diet and medication. 1. Rest: When you have a headache after drinking alcohol, you need to stop drinking immediately, then lie down and rest, do not do any activities or sports, after resting, headache symptoms can be relieved. 2. Diet: When you have a headache after drinking alcohol, you can drink a lot of warm water to dilute the concentration of alcohol in the body, thus reducing the symptoms of headache. You can also drink honey water, milk, fruit juice and other drinks, they can promote the excretion of alcohol, relieve the headache after drinking alcohol and other discomforts. 3. Drugs: When the headache after drinking alcohol is particularly strong, you can consider the use of drugs to relieve pain, such as taking ibuprofen, celecoxib and other drugs. The use of medication should be guided by a professional doctor. If the headache after drinking has not been relieved, you can go to the hospital in time for head CT and other checks.