It is possible that the fever may be caused by the following: 1. Patients are usually weak and have poor resistance, so they are easily infected with viruses and bacteria, thus causing the phenomenon of cold and fever. 2. Patients usually do not pay attention to keeping warm and do not add clothes in time according to the change of weather temperature, so they are prone to catch cold, cold and fever. 3. 4.If infants and children appear to be prone to fever, they are prone to fever because their organs are not well developed and their immunity is relatively poor. In daily life, patients must pay attention to increase immunity, increase the body’s ability to resist disease, eat more nutritious food and exercise more to enhance physical fitness, so as to avoid the phenomenon of colds and fevers.