Nasal dryness may be due to bad habits, dry rhinitis, atrophic rhinitis and so on. 1. Bad habits: if the patient often picks his nose with his hands and pulls out the nasal hair, it will lead to damage to the mucous membrane of the patient’s nasal cavity, which will lead to the symptoms of nasal dryness. 2. Dry rhinitis: dry rhinitis is a chronic inflammatory disease characterized by reduced nasal secretion, mostly related to physical or chemical stimulation, such as long-term dust stimulation, air too hot, too dry, etc. The main manifestations are dryness in the nose, reduced nasal secretion, frequent sneezing, and sometimes accompanied by a small amount of bleeding from the nose. 3. Atrophic rhinitis: atrophic rhinitis, also known as odorous nose, clinical symptoms of nasal mucosa dryness, atrophy, nasal cavity enlargement, olfactory impairment, nasal cavity with a large number of yellowish-green pus crust formation, with odor. Nasal dryness may also be due to genetic and other factors, patients should actively seek medical examination, clear diagnosis.