The oral cavity is a facade, if there are problems with breath in conversation inevitably make people feel uncomfortable, just like the Rio Olympic Village, poor facade, can not help but affect the reputation and evaluation. However, in reality, many people have also experienced this embarrassment, such as – bad breath! What is bad breath? Why do you have bad breath? Oral local disorders are the main cause of bad breath, but it should not be ignored that bad breath is often the oral manifestations of some serious systemic diseases, there are some organic disorders can also lead to halitosis. 1, gastrointestinal diseases such as peptic ulcers, chronic gastritis, functional dyspepsia, etc., may be accompanied by bad breath. 2, psychological stress Psychological stress, regular mental tension leads to the body’s nerves in an excited state, salivary gland secretion is reduced, resulting in dry mouth, which is conducive to the growth of anaerobic bacteria, and halitosis. 3, smoking, alcohol and stimulating food smoking, drinking alcohol, coffee and often eat garlic, leeks and other heavy food taste susceptible to halitosis. In addition, long-term constipation will lead to harmful substances in the body can not be discharged in time, absorbed into the blood and cause bad breath and abdominal distension. 4, oral diseases suffering from dental caries, gingivitis, periodontitis, oral mucositis, as well as tooth decay, periodontal disease and other oral diseases, the oral cavity is easy to breed bacteria, resulting in bad breath. Although bad breath is caused by a variety of aspects, but I believe that we do not want to be troubled by bad breath, just as the Brazilian Olympic Committee hopes to show the world a “beautiful” Olympics, through a reasonable and correct method can also be effective in removing bad breath. How to get rid of bad breath?