头孢抗生素是一类半合成广谱抗生素。属于β—内酰胺抗生素范畴。用于临床的有30～40种。在日本,头孢抗生素的应用已超过了青霉素,成为治疗细菌感染性疾病应用 Cephalosporin antibiotics are a class of semi-synthetic broad-spectrum antibiotics. Belongs to the category of β-lactam antibiotics. For clinical use of 30 to 40 species. In Japan, cephalosporin antibiotics have surpassed the use of penicillin, become the treatment of bacterial infectious diseases