Halitosis caused by pharyngitis is mainly treated by medication, and the specific treatment effect varies from person to person. 1. Nasal or pharyngeal infections or inflammatory reactions can cause postnasal drip, microbial decomposition of the drip liquid will produce symptoms of bad breath, commonly found in acute and chronic sinusitis, acute pharyngitis, tonsillitis and so on. 2. Common therapeutic drugs include penicillin, compound borax solution, furacilin solution, etc., which are mainly used for anti-infection, improving local blood circulation and promoting gland secretion. If it is caused by viral infection, antiviral drugs such as acyclovir should be used. If the diagnosis is pharyngitis caused by bad breath, you should consult a doctor in a timely manner, under the guidance of the doctor’s treatment, not unauthorized use of medication, so as not to delay the condition. Pay attention to oral hygiene care on weekdays, brush your teeth diligently, eat less stimulating food, and maintain a regular routine and diet.