Children’s bad breath should be adjusted through the adjustment of dietary structure, the use of digestive drugs and pay attention to oral hygiene and other ways to regulate. 1. Adjust the dietary structure: children should eat more easily digestible food, such as fruits and vegetables; eat less greasy, difficult to digest food, so as not to increase the burden on the stomach and intestines to form the accumulation of food, resulting in the occurrence of halitosis. 2. Digestive drugs: children’s accumulation of food is due to the digestive system caused by indigestion, you can take such as children’s gastrointestinal tablets, probiotics (such as bacillus subtilis bacillus granules) and other medications to promote gastrointestinal digestion, reduce the symptoms of accumulation of food, so as to achieve the purpose of eliminating bad breath. 3. Pay attention to oral hygiene: children regularly brush their teeth, pay attention to maintain oral hygiene, to a certain extent, can also alleviate the symptoms of bad breath. All of the above medications should be used under the guidance of a doctor. Parents should pay attention to the phenomenon of accumulation of food, if not treated in time, may have a greater impact on the child’s digestion and absorption as well as growth and development.