Halitosis can be removed mainly by maintaining oral hygiene, treatment of the original disease, etc. In daily life, we should pay attention to diet, do not eat food with too much flavor, such as garlic, chili, onions, etc., while ensuring a good mood, do not stay up excessively, is conducive to promoting the removal of halitosis. A, maintain oral hygiene: for oral uncleanliness caused by halitosis, should do a good job of cleaning the mouth, brush your teeth in the morning and evening, rinse your mouth after meals, if necessary, you can use mouthwash to strengthen oral hygiene, to avoid a large number of bacteria breeding in the mouth, reproduction, to a greater extent to improve the situation of halitosis. Second, the treatment of the original disease: 1, oral diseases: oral inflammation, dental caries, calculus and other conditions will also lead to halitosis, such cases should be treated as soon as possible, including drug therapy and scaling, after treatment should also pay attention to keep the oral cavity clean, develop good hygiene habits to prevent the disease from recurring, causing halitosis again; 2, digestive system diseases: when there are digestive system diseases will also appear halitosis, such as Helicobacter pylori Infection, indigestion, gastroesophageal reflux, etc., it is recommended that timely treatment to eradicate H. pylori, and at the same time actively treat other related digestive system diseases; 3, other: diabetic ketoacidosis exhaled breath will have a rotten apple smell, you need to actively treat the original disease, in order to effectively remove the bad breath.