First, it is important to correctly understand the common cold. The common cold itself is caused by a decrease in body immunity, infection by rhinoviruses, pharyngoviruses, adenoviruses, influenza, or parainfluenza viruses, leading to symptoms of respiratory infection. The principle of treatment is to choose symptomatic medicinal treatment, combined with antiviral drugs, and causative treatment. In terms of diet, attention should be paid to avoiding overly greasy, stimulating, and spicy foods, drinking plenty of hot water, measuring body temperature twice daily, and consuming foods like kiwifruit, celery, and spinach to help with metabolism.