Whether you can take aspirin for fever is related to the cause of the disease and the degree of fever. If the fever is caused by infectious diseases, the temperature is more than 38.5 ℃ can take aspirin, if it is caused by oncological diseases generally can not take aspirin at will. Fever is mostly seen in infectious diseases, such as respiratory tract infections, urinary tract infections, etc., and aspirin is a kind of antipyretic and analgesic drug, which has certain fever-reducing effect, if the fever caused by infectious diseases, the body temperature is more than 38.5 ℃, can be guided by the doctor to take aspirin, and if there is no more than 38.5 ℃ is generally not recommended to take aspirin. As for the fever caused by the tumor, you can’t take aspirin at will, because aspirin has an antiplatelet effect, taking the drug may lead to platelet reduction. Therefore, when a fever occurs, it is necessary to consult the doctor in time to find out the cause of the fever, and then follow the doctor’s instructions to take medication or other treatments, and do not take medication arbitrarily.