Nasal dryness generally belongs to the lung fire, may be solid fire, may be false fire, the specific circumstances need to be combined with other symptoms to determine. In Chinese medicine, it is believed that the lungs open the orifices in the nose, and the moisturizing of the nose is mainly related to the lungs, so if the nasal cavity is dry, it is mostly due to dryness attacking the lungs, and deficiency of lung yin (insufficient yin in the lungs). If dryness attacks the lungs, in addition to dryness of the nasal cavity, there will also be dryness of the lips and mouth, a slight malignant wind-cold, short urine, dry stools and other symptoms, which need to be treated with medicines to dispel evil spirits and moisturize the dryness of the lungs, such as apricot suzuki san. If there is deficiency of lung yin, there will be night sweating (abnormal sweating after going to sleep and stopping after waking up), dry cough with little phlegm, coughing up blood, red tongue with little moss, fine pulse (pulse becomes narrower, thinner and faster), etc. Medicines that nourish yin and moisten the lungs (replenish yin to moisturize the lungs) are needed to treat this condition, such as Sasanqua and Maidong Soup. It is advisable to consult a doctor for specific identification and medication, and do not use medication without authorization, as this may lead to a delay in the treatment of the disease.