In general, the course of continuous infusion of cephalosporin is 3-7 days. If the patient’s infection is more serious, it usually cannot be applied continuously for more than 2 weeks, but there are special cases. Cephalosporin is an antibiotic drug, mainly used to treat a variety of infections caused by sensitive bacteria. The specific duration of medication is closely related to the patient’s condition and should be analyzed on a case-by-case basis. If it is a relatively mild case of pharyngitis, tonsillitis, etc., generally only about 3 days of continuous cephalosporin infusion is needed; if it is a slightly serious case of pneumonia, appendicitis, etc., 5-7 days of continuous infusion is usually enough; if it is a serious infection with serious complications such as bacteremia, the time of cephalosporin infusion should be extended, but generally should not exceed 2 weeks, otherwise it will cause dysbiosis in the body leading to secondary infection. During the process of cephalosporin infusion, attention should be paid to more rest and a light diet. If allergic reactions occur during the medication, the medication should be stopped in time and handled by a professional doctor.