Pain in the back of the head after drinking alcohol is relatively common. Usually the following aspects should be noted: First, after drinking alcohol should drink more water, drinking a lot of water can promote the discharge of alcohol from the urine, if necessary, you can drink fruit juice, fruit juice has the effect of osmotic diuretic, which helps the metabolism of alcohol. Second, after drinking alcohol should eat food, which helps slow down the absorption of alcohol. Third, if the headache is obvious, it is recommended to go to the emergency department of the hospital, and if necessary, intravenous drip naloxone can be given. Fourth, if the headache is sudden onset should consider whether it induces acute cerebrovascular disease, such as cerebral hemorrhage, cerebral infarction, often accompanied by limb weakness, sensory impairment, dizziness, headache, nausea, vomiting, confusion, it is recommended to go to the emergency department of the hospital in a timely manner, if necessary, you can check the head CT or cranial magnetic resonance, which helps to clarify the cause.