Nasal allergy is usually clinically caused by increased sensitivity of the pre-sieve nerve. Patients with the disease usually present with nasal discomfort, nasal itching sensation, and significant sneezing symptoms in the nose. The causative factor of the disease is usually that the patient has a long history of simple rhinitis, hypertrophic rhinitis, allergic rhinitis, etc. Usually on physical examination that the nasal mucosa is seen to be pale and edematous, and the nasal septum may have a deviation. The disease usually does not cause serious complications, and after active treatment of rhinitis, deviated septum and sinusitis, the allergic symptoms of the nasal cavity can be significantly reduced. Patients usually need to actively avoid excessively cold or hot air stimulation, remember to wear a mask when going out, and can take vitamin C pills orally and use topical Daphnin or endosulina spray to reduce the occurrence of nasal allergy symptoms.