Recurrent fever of bronchial bacterial infection may be caused by insensitivity to antibiotics, or it may be caused by diseases such as pneumonia or low autoimmunity. If the infection is not effectively controlled because of insensitivity to antibiotics, and thus recurrent fever, you should seek medical attention to obtain respiratory secretions, culture of pathogens and drug sensitivity test to select effective and sensitive antibiotic treatment. If the bronchial bacterial infection is not effectively controlled, it will develop into pneumonia, which often manifests as sudden chills, recurrent fever, headache, muscle aches, cough and sputum, etc., and the temperature can reach over 39℃. To treat bacterial pneumonia, penicillin can be given, and those who are allergic to penicillin or infected with penicillin-resistant strains of bacteria can be treated with drugs such as respiratory fluoroquinolones, cefotaxime or ceftriaxone. Recurrent fever may also be caused by low autoimmunity, usually due to low immune system function and recurrent illness. This condition requires prompt medical attention. All of the above medications should be used under a doctor’s supervision, avoid self-medication. If the fever continues to be uncontrolled, it is also necessary to pay attention to whether there are other diseases that can cause fever.