The usual causes of a dry and painful nose with blood include nasal vestibulitis, chronic dry rhinitis, and deviated nasal septum. 1. Nasal vestibulitis: Inflammation of the skin of the nasal vestibule is usually caused by the bad habit of repeatedly picking the nose, resulting in damage to the skin of the nasal vestibule. Nasal vestibule is the skin at the front of the nasal cavity, which is rich in capillaries. When the inflammatory infection makes the skin of the nasal vestibule eroded and ulcerated, it will lead to dry and painful nose with the symptom of blood. 2. Dry rhinitis: closely related to the external climate environment is too hot, too dry. In a dry environment, the water discharged from the nasal mucosa will evaporate, resulting in nasal dryness, which in turn causes the local capillaries of the nasal mucosa to rupture and bleed, easily forming a blood crust, accompanied by painful symptoms. 3. Deviated nasal septum: Because the raised surface of deviated nasal septum is relatively thin mucous membrane, it is easy to be stimulated by the outside world, resulting in damage to the mucous membrane, which can easily cause nose bleeding and pain. Coupled with the fact that the nasal septum area is rich in venous blood vessels, it is easy to cause repeated dry nose pain and bleeding. Nose dry pain with blood, it is recommended to go to the regular hospital in a timely manner, clear cause after standardized treatment, in daily life, drink more water, the use of humidifiers to relieve air dryness and so on.