If children’s mouth is very smelly, mainly consider indigestion, Helicobacter pylori infection, as follows: 1, indigestion: children in addition to the mouth is very smelly, often have a panacanthic flavor, stool in the undigested food and milk petals, etc., but also abdominal distension, abdominal pain and other symptoms. You can take Chinese medicines to eliminate food and stagnation in time, such as Wang’s Baochi Pills and Shenqiu Elimination Oral Liquid, etc., which have obvious improvement effects on indigestion. You can also take probiotics, probiotics have the role of regulating intestinal flora, dyspepsia also has the role of improving; 2, Helicobacter pylori infection: you can test blood Helicobacter pylori antibodies, or carbon 13 breath test, if there is a positive result, can be diagnosed by H. pylori infection. This situation needs to give anti-Hp treatment, generally apply amoxicillin, omeprazole, ornidazole and other three drugs for combined treatment.