Dry and painful nostrils may be caused by dry rhinitis, atrophic rhinitis and nasal vestibulitis. 1. Dry rhinitis: dry nostrils are dry and painful with little secretion due to the occurrence of dry rhinitis caused by long-term inhalation of dry air dust or overheated or dry air. 2. Atrophic rhinitis: due to the atrophy of nasal mucosa, nasal secretion is reduced, and when stimulated by hot and cold air, painful symptoms will occur, and may also be accompanied by headache. 3. Nasal vestibulitis: Bacterial infection caused by eating spicy and stimulating food, picking nose hairs and other reasons, resulting in nasal vestibulitis. The main manifestations are dryness of the nasal cavity, pain in the nasal vestibule and other symptoms. Dry and painful nostrils should be timely to the otorhinolaryngology department, ask the doctor to clarify the cause of the disease, and follow the doctor’s instructions for treatment. In addition, you need to improve the living environment, avoid eating spicy and irritating food, and avoid picking your nose.