头孢三嗪系头孢菌素类抗生素，作用机理与青霉素相似，主要抑制细菌细胞壁粘肽合成，而呈现杀菌作用。头孢三嗪钠系第三代头孢菌素，具有抗菌谱广，杀菌力强，对革兰氏阴性菌，包括大肠杆菌、绿脓杆菌以及厌氧菌有较强作用，较易通过血脑屏障，对肾脏基本无毒性，对β-内酰胺酶 Ceftriaxone cephalosporins antibiotics, the mechanism of action and penicillin similar to the main inhibition of bacterial cell wall mucobal synthesis, and showed a bactericidal effect. Ceftriaxone sodium third-generation cephalosporin, with broad antibacterial spectrum, strong bactericidal, Gram-negative bacteria, including E. coli, Pseudomonas aeruginosa and anaerobic bacteria have a stronger role, easier to cross the blood-brain barrier , Basically nontoxic to the kidneys, to beta-lactamase