Ordinary cleaning mouthwash is not allowed to drink, but some specific medical mouthwash is allowed to drink. 1. Ordinary cleaning mouthwash: these mouthwashes play an antibacterial and anti-inflammatory role, and are generally more irritating. If swallowed may cause gastrointestinal irritation, such as vomiting, abdominal pain, diarrhea and other symptoms, and even damage to the gastrointestinal mucosa. After accidentally swallowed, it is best to drink a lot of water out of the body, and if discomfort occurs, it is recommended to go to the hospital in a timely manner. 2. Medical mouthwash: for example, rehabilitation of new liquid, is a special mouthwash for the treatment of digestive tract diseases, the treatment of gastrointestinal ulcers have a certain effect, so it can be swallowed. However, the use of this type of mouthwash must be used under the guidance of a doctor and not by yourself.