Fever during the day and normal temperature at night is seen in patients with intermittent fever, or some kind of regular cold symptoms caused by viral flu, mostly due to lung and airway infections, and low fever is also often manifested as such symptoms. It is usually a signal from a disease in the body to draw the patient’s attention, and it is recommended to consult a doctor promptly to identify the cause. Patients with a long pathological period of cold can also cause bacterial infections, which can lead to respiratory tract infections and intermittent fever. For such a fever, the patient can use physical cooling methods or take oral solution to clear the fever and detoxify the body, and if there is no significant improvement, the patient should go to the hospital in time.