Cephalosporin is a cephalosporin antibiotic drug, which is divided into five generations. Most of them are mainly injected intravenously, and oral drugs are more common in the first, second and third generations. Each generation of oral cephalosporin dosage is different, children need to take drugs according to the patient’s own situation, accompanied by parents, under the guidance of the doctor. 1. The first generation of representative drugs: cephradine tablets, pediatric dosage, according to the weight of each time 6.25 ~ 12.5mg / kg, every 6 hours once. 2. The representative drug of the second generation: Cefaclor capsule, 20mg/kg per day according to the body weight of children, divided into 3 times, severe infections can be increased to 40mg/kg, but the total daily dose does not exceed 1g. 3. Third generation representative drug: Cefixime dispersible tablets, pediatrics according to body weight each time 1.5-3mg/kg, twice a day. It can be increased or decreased according to the symptoms. For serious patients, 6mg/kg can be taken orally twice a day. If children need to take cephalosporins, please consult a professional doctor accompanied by parents, follow the doctor’s instructions, and use medication reasonably.