The role of the 3rd generation cephalosporin is mainly anti-infection, for the treatment of various infections its activity is stronger than the previous 1st and 2nd generation cephalosporin, its antibacterial spectrum is relatively wide, it has different degrees of antibacterial effect on Pseudomonas aeruginosa and anaerobic bacteria, and the tissue penetration is relatively stronger than the previous ones, and the distribution in the body is also wider, it mainly has strong antibacterial effect on Gram-negative bacteria, which obviously exceeds the 1st and 2nd generation cephalosporin. Generation 2 cephalosporins. The 3rd generation cephalosporins mainly include ceftazidime, cefuroxime sodium, and cefotaxime, but they also have adverse effects, such as allergic reactions.