Halitosis caused by H. pylori can be treated with triple therapy. H. pylori not only affects the digestive function of the gastrointestinal tract, but also releases metabolites that can cause bad breath symptoms. The treatment for bad breath caused by H. pylori is based on the eradication of H. pylori. Since H. pylori is a bacterium, antibiotics are needed to kill the bacteria in the choice of medication. The best choice of antibiotics is a combination of two antibiotics, such as amoxicillin combined with clarithromycin and metronidazole, in order to avoid the emergence of resistance and drug resistance of H. pylori. H. pylori requires a harsh living environment, and once the living environment is damaged, the therapeutic effect of the drug will be more obvious. Therefore, when using antibiotics, it is best to combine them with drugs that inhibit stomach acid, such as omeprazole, lansoprazole, etc.