The difference between a cold and a fever is different definitions, different causes and different symptoms. 1. Colds: Colds are diseases, mostly caused by viral infections, including rhinovirus, parainfluenza virus, respiratory syncytial virus, adenovirus, coxsackie virus or influenza virus. Patients with colds may have symptoms of fever and other symptoms such as cough, phlegm, runny nose, sneezing, loss of appetite, dry throat, sore throat, hoarseness and other manifestations. 2. Fever: Fever is a symptom. Fever is under the action of endogenous or exogenous pyrogen, resulting in dysfunction of the thermoregulatory center, so that the thermoregulatory point is shifted upward, resulting in fever. Fever can be caused by a variety of reasons including infectious diseases, autoimmune diseases, and tumors. Patients with fever may have elevated body temperature, muscle aches, chills, deep and rapid breathing and other manifestations. It is recommended that patients with colds and fevers need to consult a doctor in a timely manner, and the doctor will choose the appropriate treatment for the cause of the disease and the patient’s physical condition. It is recommended that patients with cold and fever should rest more, drink more hot water, pay attention to keep warm and avoid getting cold. In addition, the diet needs to eat light and easy to digest food.