Allergic rhinitis is divided into seasonal allergic rhinitis and perennial allergic rhinitis, and each type of rhinitis lasts for a different period of time. The following clinical analysis is available: 1. Perennial allergic rhinitis, the duration of which can be more than 9 months or can even occur throughout the year. Most of the patients suffer from it because of factors related to allergy to dust mites in the air or to the excretion of microorganisms. The clinical manifestation is repeated sneezing, runny nose, itchy nose and other symptoms, the patient’s symptoms can be light or heavy, not every moment is very serious. 2, seasonal allergic rhinitis, most occur in the spring, summer or autumn and winter, the general duration may be 2-3 months, mostly related to allergies to pollen and the like. This disease lasts for a slightly shorter period of time and the patient’s symptoms are very severe and pronounced during an attack. Allergic manifestations such as a generalized rash and edema of the throat can occur.