Recurrent fever of pancreatic cancer may be caused by cancer fever, secondary infection and combined fever. 1. Cancer Fever: The cancer cells of pancreatic cancer patients will produce certain toxins in the process of growth and reproduction, which will cause patients to have recurrent fever. Pancreatic cancer will cause jaundice, abdominal distension, poor appetite and so on, which will also easily cause fever. 2. Secondary infection: due to pancreatic cancer, most of the patients themselves will have decreased resistance, so they are relatively easy to be infected by external bacteria, which will cause secondary infectious recurrent fever symptoms. 3. Combined fever: some patients may be combined with lung infection, upper respiratory tract infection, enteritis and other diseases, which may also be combined with recurrent fever. Therefore, the specific cause of recurrent fever should go to the hospital for examination, after clarifying the cause of the disease, and then follow the doctor’s instructions for treatment.