Common causes of nostril pain include rhinitis, nasal vestibular eczema, nasal tumor, nasal vestibular boils and so on. 1. Rhinitis: the nasal mucosa becomes more sensitive to long-term inflammatory stimulation, and when it encounters cold air or enters a dusty environment, the nasal mucosa is stimulated by adverse stimulation, and then pain occurs. 2. Nasal vestibular eczema: this disease can have nasal vestibular skin erosion, oozing, itching and pain. 3. Nasal tumor: when malignant tumor occurs in the nasal cavity and spreads to the nostrils, obvious painful symptoms will also appear. 4. Nasal vestibule boils: when the hair follicles in the nasal vestibule are infected by bacteria, the symptoms of redness, swelling and pain in the nasal cavity with obvious tenderness appear. When symptoms of nostril pain appear, it is necessary to consult a doctor in time to identify the cause of the disease and give symptomatic treatment to improve the pain symptoms.