Fever after chemotherapy can also be caused by malignant tumor itself or complication of infection, and the two should be distinguished. The fever after chemotherapy usually appears 24 hours after the drug is used. If the fever appears after the drug is stopped, the fever may not be related to the drug, and the drug fever usually manifests as chills and chills, and the body temperature is generally between 38 and 40 degrees. For those who do not have obvious effect, they can be treated with epithelial corticosteroids. It is also necessary to distinguish the fever caused by tumor disease itself, generally this kind of fever is more common in the afternoon, generally around 38 degrees, part of it can reach 39 degrees. This must be distinguished and antibiotic treatment should be given in time. In the process of treatment of cooling, we should pay attention to timely hydration and give some vegetables and fruits rich in vitamin C, such as strawberries, tomatoes, kiwi, pears, etc., which can help increase appetite and immunity.