There are many reasons for dry nose, most of which are caused by environmental factors or dietary factors. Environmental factors, such as summer in July and August or autumn and winter, because the environment is relatively dry, the water in the nasal cavity evaporates quickly, which is easy to cause nasal cavity dryness and a lot of nosebleeds. There are also dietary factors, like to eat spicy food, like to eat meat, which easily leads to dry nose. Try to diversify your diet, drink plenty of water and eat more fruits and vegetables. Another reason may be the cause of the disease, such as dry rhinitis or atrophic rhinitis. Atrophic rhinitis is mainly caused by atrophy of the nasal mucosa due to gland atrophy, and the decrease of nasal secretions can also lead to dryness of the nasal cavity, which requires drug treatment.