The most frequent seasons for rhinitis are spring and autumn, specifically the following: 1. Spring, which is February-April, is the high incidence of rhinitis, especially for allergic rhinitis, because at this time of year there is a large presence of allergens in the air such as pollen, willow, sycamore and poplar trees. This is a time when allergic rhinitis is likely to occur. 2. Autumn, the good season for rhinitis in autumn is August-September, because the temperature difference between this time of the year is large, plus the allergen content in the air is still very high, so this is also the high season for rhinitis, especially allergic rhinitis. Clinically, patients with rhinitis should be actively treated during the season of high incidence, but also do a good job of preventive treatment, especially for allergic rhinitis, and it is best to use the medicine a week before the onset of the disease to achieve better results.