Fire inside the nose is always dry and crusty, may be associated with nasal mucosa dysfunction, environmental dryness, bad habits, rhinitis, etc., according to the specific causes of targeted treatment. 1. Nasal mucous membrane dysfunction: under normal circumstances, the nasal mucous membrane inside the nasal cavity has a certain role in heating and humidification. When the nasal mucous membrane dysfunction, usually easy to lead to fire inside the nose dry, and even local secretions to produce the problem of scabs. 2. Dry environment and bad habits: if the environment is dry, often picking the nose, easy to cause mucosal damage, scabs, and even accompanied by a certain amount of pain and symptoms of nosebleed. 3. Rhinitis: If there is rhinitis, such as dry rhinitis or atrophic rhinitis, it is easy to cause damage to the nasal mucosa, which produces the symptoms of fire inside the nose is always dry and crusty, usually accompanied by a runny nose, sneezing and other manifestations. Usually pay attention to maintain a certain humidity of indoor air, do not eat spicy stimulating food, you can properly eat more fresh vegetables and fruits, to add more water. If the inside of the nose is dry and crusty for a long time, it is recommended to consult a doctor to find out the cause of the disease and carry out targeted treatment.