Fever due to pneumonia is not regular, it can occur at any time of the day, and only after the symptoms improve with anti-inflammatory treatment will the temperature range decrease and thus (temperature) appear to improve. When a patient with pneumonia develops fever in the afternoon, it is still necessary to be alert to the possibility of tuberculosis infection, because there are many patients with pneumonia who are difficult to identify with tuberculosis in lung imaging, these patients are first anti-inflammatory treatment, and repeat imaging to observe whether the lesion is absorbed or not, if the lesion does not improve and there is no relief of the clinical symptoms, the likelihood of tuberculosis is relatively high, and sputum tuberculosis smears should be checked repeatedly, PPD test and a series of other tests to analyze and determine whether there is a combination of tuberculosis.