Infectious diseases including lung infections, gastrointestinal infections, biliary infections, urinary tract infections, etc. should be considered for daily fever in the evening. A daily fever in the evening needs to exclude tuberculosis, because the typical feature of tuberculosis is a low fever in the afternoon. In addition to this, patients with tuberculosis also have symptoms such as night sweats, hemoptysis, cough and sputum. Patients are advised to undergo chest X-ray and lung CT, as well as routine blood tests, TB antibodies, and sputum tests for TB bacteria. Daily evening fever can also be seen in other systemic diseases, such as infection of the biliary system. Patients can also develop fever in the late afternoon, accompanied by nausea, vomiting, aversion to oil, pain in the right upper abdomen, etc. Ultrasound of the liver, gallbladder and spleen can be done to clarify the diagnosis, and other organs should also be differentially diagnosed based on the patient’s related symptoms.