Children’s halitosis may be due to non-pathological halitosis or pathological halitosis and other reasons, such as non-pathological halitosis without treatment; such as pathological halitosis, such as dental caries, dyspepsia and other diseases are treated with medication. 1.non-pathological bad breath: usually produced in the normal physiological process, generally shorter duration, such as taking garlic, onion, radish and other foods, sleep salivary secretion due to the reduction of bacterial decomposition of food residues may cause transient halitosis. At this time, you need to do a good job of oral hygiene, no special treatment. 2. Pathological bad breath (1) dental caries: if children have dental caries, there may be bad breath, toothache, white plaque and other symptoms, you can use sodium fluoride glycerin, silver ammonia nitrate, ibuprofen and other drugs under the guidance of the doctor. (2) dyspepsia: if the baby has dyspepsia can also appear bad breath performance, usually accompanied by anorexia, nausea and other symptoms, at this time you can use clostridium casei bifidus bifidus triple bacterial tablets and other probiotics to regulate the intestinal flora, dyspepsia symptoms improve, bad breath problems will be relieved. Children with bad breath should pay attention to oral hygiene, and develop good habits such as brushing teeth after meals and before bedtime, and not eating sweets before bedtime; if children’s bad breath is due to pathological reasons, it is recommended to consult a doctor in time. All of the above drugs should be used under the guidance of a doctor, avoid self-medication.