Cephalosporin is a general term for a kind of drug, and its dosage for small children needs to be analyzed according to different drugs, different diseases, and children’s weight and age, and there is no specific data. In the clinic, the more commonly used cephalosporin antibiotics for children are cefaclor granules, cefadroxil granules, cefprozil granules, cefuroxime granules and so on, taking cefaclor granules as an example: the total dosage of children’s medication per day is 20~40mg/kg, which should be divided into 3~4 times. In the case of more serious symptoms of infection, you can appropriately increase the dose of children’s medication, but the total daily amount does not exceed 1000mg. Cephalosporin antibiotics may cause nausea, vomiting, itching, rash and other adverse reactions during use. Cephalosporins are contraindicated in people who are allergic to cephalosporins. To ensure the safety and efficacy of the medication, it must be used under the supervision of a doctor.