Fever is a common clinical manifestation of coronavirus infection, and can be caused by a variety of factors, both infectious and non-infectious. Fever is a common clinical manifestation of coronavirus infection. For patients with an epidemiological history, it is important to pay attention to the presence of fever and promptly complete blood tests, chest CT and coronavirus nucleic acid tests to detect coronavirus infection. Patients with fever should also be differentiated from other diseases, such as common bacterial and other viral infections, as well as sepsis, tumors, and connective tissue diseases, which can cause fever to varying degrees, so patients with fever must be diagnosed differently.