Alcohol consumption is not recommended during root canal treatment of a tooth and may lead to adverse reactions such as expansion of inflammation and delayed wound healing. Inflammation is usually present in teeth undergoing root canal treatment, and alcohol consumption can lead to increased blood circulation in the body, while bacteria at the root of the tooth can spread during this increased circulation. Although anti-infective treatments are actively administered prior to root canal treatment, the possibility of bacterial spread still exists and therefore drinking alcohol during root canal treatment is not recommended. Additionally, the long and complicated process of root canal treatment on a tooth can cause irritation of the wound, which can lead to delayed healing of the inflammation if alcohol is consumed during the treatment. To summarize, during root canal treatment, it is recommended to eat a light diet, avoiding spicy, stimulating, hard, cold and other foods, etc. Drinking alcohol during treatment is not recommended. If any discomfort occurs during the treatment, it is recommended to consult a doctor in time and treat the symptoms in order to avoid delaying the best time for treatment.