In clinical practice, there are many patients who have fever in the afternoon every day, but have no other physical discomfort. The specific reasons for this situation are as follows: 1. It may be caused by respiratory diseases, such as tuberculosis. The endocrine disorder is a common clinical cause of afternoon fever, such as hyperthyroidism, which can lead to repeated afternoon fever, and thyroiditis, such as subacute thyroiditis, which can also lead to this condition. See in female patients will appear in the afternoon fever. So through the analysis of the above points, every afternoon fever should be examined to confirm the diagnosis and treatment according to the specific situation.