Children with bad breath, you can take the following treatment measures: 1, the child’s gastrointestinal function is weak, resulting in indigestion can drink more yogurt, eat more coarse fiber food, stimulate gastrointestinal peristalsis. 2, if the child does not pay attention to oral hygiene, cleaning, dental accumulation of a large number of food debris and soft tartar, in the bacterial fermentation to produce a sour smell, you can form the habit of brushing teeth in a timely manner after a meal and gargle rinses with the application of dental floss, Dental floss, dental floss, flosser, etc. to remove the adjacent surface of the stagnant food soft scale. 3, the formation of deep caries cavity in the milk teeth can be abraded decayed tooth tissue, cavity preparation, the application of glass ionomer cementum and other fillings, to restore the neighboring relationship. 4, if you suffer from necrotizing gingivostomatitis, resulting in extensive necrosis of the soft tissues, accompanied by oozing of blood can be applied to control the bacterial infection, such as antibiotics.