Colds, also known as upper whistle infections, occur in the fall and winter, and are common whistle infections, mostly caused by viruses and, to a lesser extent, bacteria, which can usually be cured on their own, including viral pharyngitis, laryngitis, bacterial pharyngeal-tonsillitis, the common cold, herpes pharyngitis, etc. Preventing colds is simple: 1. Exercise. Proper outdoor exercise can improve the body’s ability to withstand cold and immunity, reducing the occurrence of colds; 2, reasonable diet. Reasonable diet helps health and increases resistance to various pathogenic microorganisms; 3, pay attention to rest. Fatigue will cause the body’s immune system to decline and susceptible to colds, to ensure adequate sleep, regular rest and reduce staying up late; 4, avoid getting cold, rain. Avoid close contact with patients with colds, and avoid touching the nose and mouth with dirty hands; 6, pay attention to protection, children and the elderly and infirm need to take protective measures when the flu is prevalent, wear a good mask and avoid public places; 7, vaccination against influenza, some colds are caused by influenza, if necessary, vaccination against influenza. The occurrence of the flu is related to the patient’s habits, physique, cold and other factors, the first thing to do is to avoid getting cold, followed by attention to exercise to enhance resistance, while developing good habits and avoiding exertion, etc.