Mouth ulcers can drink beer, but it is usually not recommended. 1. Mouth ulcers are mainly characterized by the appearance of round or oval ulcerated spots on the oral mucosa and are accompanied by obvious pain. Generally speaking, beer, as a drink, does not produce any too many side effects, can be drunk, but the alcohol in beer will stimulate the ulcer points, resulting in increased pain, slowing down the healing speed of the ulcer, so patients with mouth ulcers are not recommended to drink beer. 2. Mouth ulcers are caused by a variety of factors occurring in the oral mucosa localized ulcerative injury, the patient should pay more attention to daily diet light, to avoid spicy, greasy, too acid, too hard and other oral irritation of food, you can eat more fresh fruits and vegetables, to avoid staying up late, to strengthen the body exercise. You should also pay more attention to oral hygiene and rinse your mouth after meals. If the mouth ulcers lead to severe pain, should promptly seek medical attention, by the doctor for targeted treatment.