The connection between the nasal cavity and the oral cavity is the nasopharynx, causing dryness and pain in the nasopharynx for a number of reasons: 1, caused by the high temperature and low humidity of the environment in which they live. 2, staying up late, anxiety, fire related. 3, caused by pharyngitis in the throat. The first treatment requires intranasal drops of vitamin AD treatment to moisten and nourish the nasal mucosa to reduce the symptoms of dryness and pain in the nasopharynx. Secondly, you can also do oral nebulizer inhalation treatment to reduce inflammation and swelling in the nasopharynx through the oral cavity. Once again, if the symptoms of dryness and pain in the nasopharynx are more serious, oral antibiotic treatment is required. It is recommended to avoid spicy and irritating food, not to eat too hot food, to eat a light diet and to drink more water, talk less and rest more.