If patients with advanced lung cancer have fever all the time, it is mainly caused by two situations: 1. Tumor fever of lung cancer itself, because lung cancer cells are constantly proliferating, the rapid growth is accompanied by necrosis of tissues, and there will be absorption of fever in the necrosis of tissues, which is tumor fever. This is tumor fever. If the fever is not too high, and if repeated fever brings pain to the patient, non-steroidal anti-inflammatory and analgesic drugs can bring down the temperature more effectively.2. Lung cancer is often accompanied by infections, and if it is infectious fever, the method just now is not suitable, and appropriate antibiotics must be added. If necessary, according to the results of sputum or blood culture, double or even triple antibiotics should be applied to suppress the infection so that the patient can get well. All the specifics should be further clarified in the hospital for symptomatic treatment.