Allergic rhinitis in autumn is divided into two categories: inhalation and ingestion. Generally, inhalation allergens are autumn pollen, which enter the body and react to release biologically active substances, causing pathological changes in the body, mainly histamine and leukotrienes, resulting in sneezing, runny nose, itchy nose and nasal blockage symptoms. Treatment methods are as follows: 1. Avoid contact with allergens, move to a non-allergic place if possible, or wear a mask to block some of the allergens from being inhaled; 2. blockage symptoms, ventilation should be restored first; 4. For food-intensive allergic rhinitis, avoid eating allergic foods.