Recurrent fever is not necessarily a new coronavirus infection. There are many causes of fever, and several systemic diseases can cause fever. Infectious fever is often caused by bacterial, viral, atypical pathogenic organisms, fungal infections, etc. Non-infectious fever is often seen in cancer, hyperthyroidism, immune system diseases, and blood diseases. Non-infectious fevers are often seen in cancer, hyperthyroidism, immune system disorders, blood disorders, etc. Repeated fevers need to be determined by the accompanying symptoms as well as laboratory tests and given comprehensive treatment. The diagnosis of novel coronavirus mainly depends on whether there is an epidemiological history, that is, whether there is a history of traveling and living in Wuhan, Hubei or the surrounding areas in the 14 days prior to the recurrent fever, and whether there is a history of close contact with patients diagnosed with novel coronavirus. The fever of the new coronavirus is usually low to moderate, and in severe cases, the fever may be persistent or absent.