Itchy nose is mainly an allergic inflammatory reaction of the nasal mucosa caused by allergies, but it can also be allergy-induced nasal vestibular eczema. Whichever disease causes itchy nose, it is related to allergy. In the case of allergic rhinitis and atopy, which are caused by exposure to allergens, the main symptoms include itchy nose, sneezing, runny nose and nasal congestion. Nasal vestibular eczema is caused by exposure to allergens, moist nasal vestibular skin, and frequent irritation. For allergy-induced itchy nose, if it occurs frequently, it is important to find the allergen and avoid contact as much as possible before effective treatment can be administered. For allergic rhinitis, the main treatment is with nasal hormone sprays, oral anti-allergy drugs, and specific therapeutic drugs need to be taken under the guidance of a doctor. Nasal vestibule eczema can be applied locally with zinc oxide ointment and oral allergy medication, topical glucocorticoids are needed if necessary, avoid nose picking and spicy stimulating food. Usually eat more fresh fruits and vegetables, drink more warm water, exercise, improve resistance.