Patients with allergic rhinitis should not blow on air conditioners as much as possible because allergic rhinitis is caused by a decrease in the body’s immunity and resistance, and the symptoms associated with nasal inhalation of allergens, which generally include dust, pollen, mites and the stimulation of alternating hot and cold air, as well as blowing air conditioners. Patients may experience morning sneezing, runny nose, nasal congestion, decreased sense of smell and other related symptoms, and on examination, pale edema of the turbinate mucosa is seen, with a large amount of secretions attached to the middle turbinate. In the treatment, the first thing is to avoid allergens, that is, to avoid direct blowing of air conditioners, and to pay attention to the cleanliness of the room to maintain humidity and temperature.