Drinking alcohol at any time of day can be harmful, especially in excess. Drinking alcohol before going to bed may affect the quality of sleep, damage the liver and so on. 1. Sleep quality: Drinking alcohol may lead to too many night risings, thus affecting the quality of sleep, waking up easily, dreaming and so on. 2. Damage to the liver: Alcohol is mainly metabolized by the liver, and drinking alcohol increases the burden on the liver, which will aggravate the damage to the liver in the long run. It is recommended to minimize the consumption of alcohol, especially before going to bed. If you have any related symptoms, such as vomiting and other discomforts, you should consult a doctor as soon as possible, and under the guidance of a professional doctor, give appropriate treatment to avoid delaying your condition.