When autumn arrives, the temperature plummets and the number of patients with allergic rhinitis increases, but many new patients treat allergic rhinitis as a cold and take cold medicine casually, with predictable results: on the one hand, the medicine does not work and even produces side effects, on the other hand, it delays the treatment of allergic rhinitis and even causes sinusitis. For this reason, it is very important to correctly distinguish between a cold and allergic rhinitis. The following is a comparison of 4 aspects: etiology, main symptoms, course of the disease, and treatment methods. Differences between colds and allergic rhinitis: Colds: caused by bacterial or viral infections. The main symptoms are usually sore throat, nasal congestion, runny nose, cough, fever, fear of cold, and general muscle pain. The duration of the disease is usually 5-7 days and up to 14 days. The treatment is anti-infection therapy. Allergic rhinitis: due to contact with allergens, such as inhalation of paints, chemical agents, animal fur, pollen, etc.; ingestion of foreign proteins, such as fish and shrimp. It manifests as nasal congestion, runny nose, sneezing, itchy nose and itchy eyes. It is divided into perennial and seasonal. Seasonal allergic diseases are mostly published in summer and autumn, and the disease attacks when pollen is present, but the disease is stable at ordinary times; perennial allergic diseases are found all year round, and the symptoms are more obvious when the cold air or temperature changes greatly. Treatment is to avoid contact with allergens, anti-allergy drugs, acupuncture to regulate the body and reduce body sensitivity.