Nose redness can be caused by localized friction and irritation, rosacea, etc. It can be improved by medication or laser treatment according to the specific cause. 1. Localized friction and irritation: If the nose is itchy and runny due to colds, allergic rhinitis or other diseases, repeated nose blowing can irritate the skin of the nose and cause local redness. Usually there is no need for special treatment, active treatment of the original disease can be improved. 2. Rosacea: Hereditary factors and skin barrier dysfunction can cause rosacea, resulting in redness of the nose. Pimecrolimus ointment, metronidazole, azelaic acid and other medications can be used to alleviate the redness of the nose. Oral doxycycline, minocycline, hydroxychloroquine and other drugs. If necessary, the localized redness can be improved by laser treatment. The above medications should be used in a standardized manner under the guidance of a doctor after the cause of the disease has been clarified.