Common conditions in which the nose is often dry and crusty include dry rhinitis, atrophic rhinitis, and chronic nasal vestibulitis. If the above symptoms occur, treatment should be decided according to the cause of the disease. 1. Dry rhinitis: the air is cold, dry, and windy in some seasons, which can easily lead to ciliated epithelial degeneration, cilia motor dysfunction, the movement of mucus blanket is affected, mucus is sticky, and harmful substances in the air are not eliminated in time, which can lead to secondary infections. Symptoms such as nasal dryness, nasal itching, nasal congestion and nasal bleeding are often present. Nasal examination shows that the mucous membrane is slightly pale and dry, and there are sticky secretions or thin crusts attached to the front of the nasal cavity, and the mucous membrane of the front of the nasal septum appears to be erosion and superficial ulceration. 2. Atrophic rhinitis:It can be triggered by surgery, purulent secretion and stimulation of undesirable physical and chemical factors, as well as special infections, etc. It may also be related to endocrine disorders, autonomic dysfunction, vitamin deficiency and other factors. Mucosa and turbinate bone atrophy, ciliated columnar epithelium into squamous epithelium, there are pus crusts, often accompanied by odorous nose bacillus infection and smell strange odor, also known as odorous nose syndrome. 3. Chronic nasal vestibulitis: this disease is mostly associated with long-term exposure to harmful dust stimulation such as tobacco, fur, cement, asbestos and other inflammation, to the lateral part of the nasal vestibule is obvious, can be unilateral or bilateral. Chronic phase manifests as itchy, dry, foreign body sensation of the nasal vestibule skin, accompanied by burning, tenderness, localized skin thickening, nasal hairs are scarce due to shedding, and scabs can be attached to the surface. There are many reasons for nasal dryness and crusting, and it is recommended that patients actively seek medical attention to clarify the cause of the disease and standardize treatment according to the doctor’s guidance.