Mouth ulcer patients can not drink alcohol. Mouth ulcers are common and frequent diseases, the cause of occurrence is related to more factors, such as local trauma, viral infection, mental tension, anxiety, stress, lack of sleep leading to immune disorders, decreased immunity, etc., can cause mouth ulcers. For the treatment of mouth ulcers, it is necessary to pay attention to rest, relaxation, eat a light diet, avoid stimulation, and at the same time then use to promote the local inflammation subside, prevent infection of drugs, mouth ulcers in order to faster recovery, healing. Drinking alcohol for oral ulcer healing is not favorable, because alcohol can cause the body’s immune function decline, the oral ulcer local wound has a stimulating effect. Local ulcer surface new mucous membrane, cell contact with alcohol that is ethanol, may be damaged, destroyed, so that the mouth ulcer is difficult to heal. Therefore, during the attack of mouth ulcers should strictly avoid alcohol, otherwise it can lead to mouth ulcers are difficult to heal.