Children’s bad breath is mainly related to indigestion, and should be improved by general treatment and medication. 1. General treatment: If a child has the habit of overeating, it will cause food accumulation and induces indigestion, and bad breath and other symptoms. Parents should let their children develop a regular diet, eat regularly at regular intervals every day, eat small meals and avoid excessive intake at one time. At the same time to develop good hygiene habits, brushing teeth diligently to keep the mouth clean. 2. Medication: If the child has Helicobacter pylori infection, he or she should take omeprazole, amoxicillin, clarithromycin, bismuth potassium citrate and other medications under the guidance of the doctor to treat the disease, which belongs to the quadruple therapy. For children with postprandial fullness, early satiety as the main symptom, can be taken under the guidance of the doctor Bohol oral liquid, compound lactobacillus eosinophilus and other drugs to promote digestion and regulate intestinal flora. Children’s bad breath is often considered to be indigestion, parents are advised to take their children to the doctor, a clear diagnosis, choose the appropriate way of treatment. Daily life also need to pay more attention, develop good habits.