Dry and itchy throat can be caused by drinking too little water, acute pharyngitis, chronic pharyngitis, diabetes mellitus, reflux pharyngitis, etc., and needs to be treated with medication for the cause. 1. Drinking too little water: lack of drinking water, high ambient temperatures, thick clothing and other factors lead to physiological dehydration, which can cause the throat itchy and dry. In this case, drink more water and keep the environment ventilated. 2. Acute pharyngitis: viral infection of the body as an exogenous pyrogen and increase body temperature, resulting in evaporation and heat loss, in addition to the inflammatory response of the throat leading to dry throat. Ribavirin, oseltamivir and other antiviral drugs can be applied to treat the disease, and you can also take Four Seasons Antiviral Combination and other proprietary Chinese medicines to treat the disease. 3. Chronic pharyngitis: chronic inflammatory reaction of the mucous membrane of the throat appears lymphoid follicular hyperplasia and other changes, so the throat will be itchy and dry. You can take watermelon cream throat tablets, iodine tablets, peppermint throat tablets, 5% silver nitrate solution, compound iodized glycerin, etc. to smear the throat for treatment. 4. Diabetes: patients due to osmotic diuresis leads to a large loss of water in the body, so the throat itchy and dry. Can take metformin, glipizide and other hypoglycemic drugs or subcutaneous injection of insulin treatment. 5. Reflux laryngitis: stomach acid and other stomach contents reflux into the throat, corrosive stimulation and throat itchy dry symptoms. You can eat aluminum sulfate, omeprazole, domperidone and other drugs to treat. After the onset of the disease should actively seek medical attention, clear diagnosis and follow the doctor’s instructions to standardize the use of drugs and treatment.