Viral cold fever is related to the body’s own immunity and usually does not exceed 7 days. After symptomatic treatment of viral colds, along with proper rest and nutritional support, the body itself has enough time to generate the corresponding immunity and resistance to gradually clear the virus and slowly heal. Usually, the fever lasts for several days and patients need to pay attention to the degree and duration of the fever. If the fever gets lower and lower, it means that the immune system is strengthened, the virus is gradually weakened, and the body gradually recovers, so there is no need to be too nervous. If the fever persists for more than 2-3 days, the patient should immediately go to a hospital for treatment in the Department of Infectious Diseases to avoid delaying treatment. In addition, for elderly patients with pre-existing chronic diseases, once a cold or fever occurs, they should seek medical attention and timely treatment to avoid causing more harm to their bodies.