Anti-tuberculosis drugs pyrazinamide and ethambutol after the use of fever, may be tuberculosis disease itself caused by fever, adhere to the regular use of anti-tuberculosis drugs can be relieved. The fever may also be caused by bacterial infection in combination with tuberculosis patients, which requires continued anti-tuberculosis treatment along with bacterial infection treatment. 1. caused by tuberculosis disease itself: at the beginning of taking anti-tuberculosis drugs, the blood concentration of drugs in the body has not reached a stable level, and the condition of tuberculosis is not under complete control, patients need to continue to take anti-tuberculosis drugs regularly, and when the blood concentration of drugs in the body reaches a stable level, the patient’s fever symptoms will be relieved. 2. Tuberculosis patients with bacterial infections: tuberculosis patients with bacterial infections will have a sudden fever, which can be clarified through routine blood tests. Routine blood test will find that the white blood cells, neutrophils and other indicators of infection are elevated. This situation needs to adhere to the anti-tuberculosis treatment at the same time, give the patient effective antibiotics for anti-infection treatment, such as cefaclor, cefdinir, cefuroxime, etc., the condition will be relieved after the symptoms of fever will also be controlled. Tuberculosis requires long-term, adequate, combined, standardized treatment, patients should follow the doctor’s instructions to use medication, if you feel unwell, you should go to the hospital in a timely manner, so as not to delay the condition. Drugs need to be used under the guidance of a professional physician, and should not be used arbitrarily on their own.