It is very common to have a headache the next day due to drunkenness, which is related to the large amount of alcohol consumed and the incomplete metabolism of alcohol, and the residual alcohol stimulates the cerebral blood vessels and causes dilation resulting in headache. If the pain is obvious, you can take oral ibuprofen or acetaminophen to relieve the headache. 5. If the headache cannot be relieved by taking the above measures, you need to go to the hospital and have a parallel head CT or MRI to rule out cerebrovascular accidents. Pay attention to control the amount of alcohol you drink in the future to avoid too much discomfort. Before drinking, you can drink milk or eat some vegetables to protect the gastric mucosa and prevent too much alcohol from being absorbed into the gastric mucosa too quickly.