Colds should be seen in the respiratory medicine department of a hospital or, if the symptoms are more severe, in the emergency department. Cold is a generic term for upper respiratory tract infection, which is mainly due to the inflammatory changes in the mucous membrane of the upper respiratory tract caused by the invasion of viruses, bacteria, mycoplasma, chlamydia, rickettsia and other pathogens due to the decrease of the body’s resistance. Most of the colds are self-limiting, caused by common viral infections, and do not require special treatment, proper rest and drinking warm water, usually within a week, can achieve self-cure. For more serious colds and flu, proper anti-pathogenic treatment is needed, such as treatment with oseltamivir, cytarabine, acyclovir, etc. It is only through medically appropriate intervention that complete recovery can be achieved.