Redness of the inner wall of the nostrils may be related to nasal vestibule boils, acute rhinitis, nasal vestibule eczema and other factors. 1. Nasal vestibule boil: a local inflammatory reaction caused by bacterial infection of the skin, clinical manifestations of burning pain, redness, swelling, itching, flaking and other phenomena in the nasal vestibule, the inner wall of the nostrils may appear very red phenomenon. 2. Acute rhinitis: acute inflammation of the mucous membrane of the nasal cavity caused by bacteria, viruses and other factors, clinical symptoms manifested as swelling of the mucous membrane of the nasal cavity, nasal congestion, headache, nosebleed, and so on, there may be the phenomenon of the inner wall of the nostrils is very red. 3. Nasal vestibule eczema: a kind of skin damage that occurs in the nasal vestibule, may be due to internal and external factors of infection, the nasal cavity part of the frequent friction caused by the clinical symptoms of itching, skin erosion, skin pimples, skin thickening triggered by the phenomenon of the nostrils in the lining of the very red. If the above symptoms occur, it is recommended to go to the regular hospital in time, clear diagnosis, and give targeted treatment.