The treatment course of cephalosporin antibiotics is related to the type of disease and is usually recommended until 72 hours after the temperature is normal and the symptoms have disappeared; the exact course of treatment cannot be predicted. If the patient is a mild infection, the blood routine is back to normal and the symptoms are relieved, the drug can be considered to be discontinued, usually the drug course is 3-5 days; if the patient is a severe infection, such as severe pneumonia, sepsis, the drug needs to be given in full amount and full course, and when the body temperature is normal and the symptoms are relieved, the drug can be considered to be discontinued, usually the drug course is 14 days or even longer. The final course of treatment depends on the type of pathogenic bacteria, the type of disease, and the patient’s physical condition, and should follow the doctor’s instruction. Cephalosporin is an antibiotic, mostly used for the treatment of diseases caused by bacterial infections, but is not effective for upper respiratory tract infections caused by viral infections, and should not be purchased and used on its own to avoid endangering health.