Radiation therapy is clinically known as radiotherapy. Fever symptoms caused by radiation therapy can be relieved by drinking plenty of water and resting, and if necessary, acetaminophen, lysergic acid and other medications can be taken to lower the temperature as prescribed by the doctor. Radiation therapy may cause local damage to the body, platelet reduction, so that the body’s immune function caused by fever. Fever is lower than 38 degrees Celsius can temporarily do not take antipyretic drugs, drink more water, pay attention to rest to promote metabolism, give light, easy to digest diet can relieve symptoms. If the temperature is higher than 38 degrees Celsius, you can take acetaminophen or lysergic acid to lower the temperature. Fever caused by radiation therapy is a normal reaction, there is no need to worry too much, if there is an aggravation of the condition and other adverse reactions, you should consult a doctor in a timely manner, under the guidance of the doctor to standardize the treatment, follow the doctor’s instructions, the scientific use of medication. Drugs need to be used under the guidance of a professional physician, not at will.