A patient with a red nose is likely to have rosacea. Rosacea, is a chronic inflammatory skin disease of the face. Patients must not eat too spicy and stimulating food, and do not drink or smoke, avoid mood swings, and avoid too much mental stress. The patient can also take oral vitamin B, such as vitamin B2 or vitamin B6, or apply an anti-anaerobic gel on the surface of the nose, such as metronidazole gel or compound tinidazole gel, which will be clinically effective. In life, patients must pay attention to the cleanliness of the face, you can use a face wash that removes oil. Patients should not touch their noses with their hands often, and should not blow their noses hard to avoid aggravating the redness of their noses. After active treatment, the patient’s condition should improve significantly.