Halitosis see a doctor can generally hang stomatology, gastroenterology and so on. Halitosis has many causes, first of all, it may be related to oral diseases, clinical caries, gingivitis, periodontitis, wisdom teeth, pericoronitis and other diseases may lead to halitosis symptoms, appear. Secondly, it may also be related to digestive diseases, such as gastritis, gastric ulcer, duodenal ulcer, gastroesophageal reflux and other diseases may also lead to bad breath symptoms. If the symptoms of bad breath have already appeared, according to the cause of the symptomatic treatment, you can promptly go to the stomatology and gastroenterology or other departments for consultation. Usually also need to pay attention to personal oral hygiene, do a good job of local cleaning, regular medical scaling.