Fever caused by cold usually subsides in about 3 days. Colds are categorized into common colds and influenza, both caused by viral infections, and the main symptoms of patients are nasal congestion, sneezing, watery nasal discharge, coughing, dry and itchy throat, and fever, etc. Fever caused by common colds varies among individuals. Generally speaking, the fever of a cold, how long it takes for the fever to subside, there are individual differences, and the fever usually subsides in about 3 days. For severe cases, the fever may last longer. Cold patients with fever symptoms, such as body temperature <38.5 ℃, no need to use antipyretic drugs, can be given physical cooling, and need to be closely observed. Instead, antipyretic medications such as acetaminophen and ibuprofen need to be given if the temperature is ≥38.5℃. Any cause of fever, no matter how many degrees, need to emphasize hydration, can play a role in physical cooling and replenish the body's moisture. When you have a cold, you should also pay attention to more rest, your diet should be based on easy-to-digest and nutritious food, you should pay attention to the appropriate increase or decrease of clothing, and do not blindly use antibiotic drugs. If you have a persistent high fever that does not go away, it is recommended that you go to the hospital in a timely manner.