Sudden dryness of the throat is mainly caused by fire. Usually do not pay attention to drink more water, eat stimulating spicy food, or recently life and diet is not regular, talk more, do not pay attention to rest, as well as living and working environment in the air is dry, the temperature is relatively high, may cause fire, sore throat, feel dry. Generally, you should drink more water, eat more fresh vegetables and fruits, and also treat with medicines that clear heat, remove fire, and benefit the throat, for example, you can use gold honeysuckle granules, and you can also orally take Li-pharyngeal Ling, or you can use Xuanmai Ganjiao granules and other medicines. If the working and living environment is dry, you should also use a humidifier to improve the air quality. The situation of more dust in the air also has a great impact, so pay attention to protection to avoid inhaling too much dust.