Pharyngitis may cause bad breath. Patients with pharyngitis may experience congestion and swelling of the throat due to inflammatory stimuli. When food passes through the congested and swollen mucous membrane of the throat, it may remain in the folds of the throat, and if the food residue accumulates and decays for a long period of time, it may produce a ichthyotic odor. Pharyngitis may also cause inflammation and infection of neighboring organs, such as tonsillitis, tonsil stones, or inflammation of the oral cavity, which may also cause bad breath symptoms. Chronic pharyngitis causes gastroesophageal reflux, most of the symptoms of dyspepsia, gastric contents reflux, can also cause bad breath. Pharyngitis patients follow the doctor’s instructions to use compound borax solution gargle, at the same time in the throat can be sprayed open throat sword spray or watermelon cream spray, oral licorice ice plum tablets, six god pill, golden voice and throat pill. Usually eat a light diet, do not smoke or drink a lot of alcohol, and do not stay up all night. It can improve the symptoms of bad breath.