Fever occurs after chemotherapy with ascorbic injection, it should be cooled down under the guidance of the doctor, and physical cooling can be used when it is lower than 38.5 ℃; on the contrary, antipyretic drugs can be used, such as non-steroidal anti-inflammatory drugs. After chemotherapy due to leukopenia application of ascending white needle treatment, some patients will have fever, mainly due to the side effects of ascending white needle. If the body temperature is lower than 38.5 ℃, physical cooling can be used, such as warm water wipe forehead, armpit, popliteal fossa, groin and so on, and pay attention to drink more warm water. If the body temperature is higher than 38.5 ℃, non-steroidal anti-inflammatory drugs, such as ibuprofen, diclofenac sodium, antipyretic suppositories and so on, can be used under the guidance of the doctor. In addition, side effects of Ascorbic Acid include muscle aches and pains, bone pains, liver function abnormalities, etc. Make sure to apply under doctor’s supervision when using it.