The fever may be caused by the following factors: 1. The fever is in the period of rising body temperature, when the body temperature rises, the blood in the body will be redistributed, the blood supply in the important organs will be more, and the blood supply in the skin and the periphery will be relatively reduced, so it will lead to the symptoms of chills. 2. This is also a factor that leads to chills. Patients with fever and chills should measure their body temperature in time to clarify the specific fever temperature and take antipyretic drugs to cool down, such as aspirin, and pay attention to proper warmth and drink more warm water.