The dryness and foreign body sensation in the throat is mostly caused by chronic tonsillitis, chronic pharyngitis or allergic pharyngitis, which can be treated with oral medication according to the cause of the disease. 1. Chronic tonsillitis: patients will appear fever, dry throat and foreign body sensation and other symptoms, if tonsillitis is caused by bacterial infection, you can take oral penicillin or cefixime and other drugs for treatment. 2. Chronic pharyngitis: mostly due to poor diet, upper respiratory tract lesions and other reasons, there will be swelling, dryness of the throat and foreign body sensation and other symptoms, secondary bacterial infection can be oral azithromycin tablets and other antibiotics for treatment. 3. Allergic pharyngitis: mostly due to body contact with allergens and other reasons, there will be coughing, dry throat and foreign body sensation and other symptoms, you can take oral cetirizine, loratadine and other antihistamines for treatment. The above drugs need to be used under the guidance of a doctor to avoid unauthorized use of medication to cause adverse effects.