The feeling of fire in the mouth and nose is usually seen clinically in the following cases: i. The incubation period of upper respiratory tract infection, that is, to catch a cold, may be 1-2 days more typical cold symptoms may be manifested. You can start with oral administration of conventional antiviral Chinese medicines, such as Banlangen, cold and flu granules, etc. Second, viral infectious diseases, common are acute pharyngitis, herpes pharyngitis, etc.. If herpes can be found on the surface of the oral mucosa, you can first take oral antiviral drugs, such as busulfan anti-inflammatory oral solution, acyclovir tablets, ribavirin. Third, excessive smoking and alcohol, spicy diet stimulation, such as frequent barbecue, hot pot, high alcohol, it is recommended to eat a light diet, eat more fruits, yogurt, hydration.