Children’s halitosis may be related to oral hygiene, dental caries, periodontitis, indigestion and other factors, can determine the treatment of halitosis according to the causes of halitosis, the specific analysis is as follows: 1, oral hygiene: children after eating if you do not brush your teeth, rinse your mouth, there may be food residues left in the mouth, these food residues in the role of bacteria fermentation decomposition, emitting foul odor, the 2, dental caries: children with dental caries will have cavities in the teeth, the food residues after eating easily remain in the teeth cavities, these food residues by bacterial attack will cause oral infection, so that the symptoms of bad breath; 3, periodontitis: periodontitis mostly occurs in adults, but there are a few children will appear periodontal inflammation. When periodontal tissue inflammation will produce a large number of bacteria that can break down proteins and produce smelly volatile sulfides, resulting in symptoms of bad breath; 4, indigestion: indigestion, poor gastrointestinal function, food is easy to accumulate in the digestive tract, which can be corrupted over time, resulting in bad breath in children; 5, nasopharyngeal inflammation: when suffering from inflammation of the nose, throat, such as sinusitis, tonsillitis, atrophic rhinitis, etc., may produce purulent secretions causing bad breath in children. Second, the solution to halitosis: 1, maintain oral hygiene: If the halitosis is caused by oral hygiene, children can brush their teeth every morning and evening and rinse their mouth with water after eating to develop good oral hygiene habits to solve the symptoms of halitosis; 2, treatment of dental diseases: If the halitosis is caused by dental caries or other dental diseases, you should go to the dental hospital as soon as possible for targeted treatment to solve the halitosis and dental diseases to avoid 3, anti-inflammatory treatment: some bacterial infection caused by periodontal inflammation will also appear bad breath, then you can use some anti-inflammatory drug treatment, such as cephalosporin, azithromycin, etc.; 4, improve gastrointestinal function: if the gastrointestinal disease caused by bad breath, you can apply some drugs to promote intestinal peristalsis, improve digestive function, such as wake up the spleen to raise children particles, stomach tablets, etc., you can also improve the diet, eat more Food rich in dietary fiber, such as cabbage, leeks, spinach, etc.; 5, nasopharyngeal inflammation: If the child’s bad breath is caused by inflammation of the nose and throat, you can first treat the primary disease, thereby alleviating the bad breath. Third, note: If a child has bad breath for a long time without relief, and accompanied by other symptoms, should promptly go to the hospital for medical consultation to identify the cause, the right treatment to avoid delaying the disease.