Light runny nose is considered to be due to chronic rhinitis and chronic allergic rhinitis symptoms caused by the attack, first of all need to go to the hospital for a detailed examination of electronic rhinoscopy, blood routine, allergen antibody test and skin prick test to confirm the diagnosis. During the examination, it can be found that the nasal mucosa is congested and edematous, and the surface can be covered with a large amount of abnormal secretions. In the case of chronic rhinitis, most of the patients will have alternating nasal congestion in both nasal passages, accompanied by mucous secretions. As for allergic rhinitis, patients may experience paroxysmal sneezing and persistent watery nasal discharge after exposure to allergens, accompanied by nasal itching. In terms of treatment, symptomatic anti-inflammatory and anti-allergy treatment is needed. Patients also need to exercise regularly to improve the body’s immunity and resistance, and restore the function of the mucous membrane of the nose and cheeks, so that it can gradually improve.