This product is a first-generation cephalosporin, which has good antibacterial effect on some strains of Gram-positive cocci such as non-penicillinase-producing and penicillinase-producing Staphylococcus aureus, coagulase-negative Staphylococci, group A hemolytic Streptococcus, Streptococcus pneumoniae and viridans Streptococcus. Anaerobic Gram-positive bacteria are mostly sensitive to this product, while Bacteroides fragilis is resistant to it. Methicillin-resistant Staphylococci and Enterococci are resistant to this product. The effect of this product on Gram-positive and Gram-negative bacteria is similar to that of cephalexin. This product has a certain effect on Neisseria gonorrhoeae, and is also active against enzyme-producing Neisseria gonorrhoeae; its activity against Haemophilus influenzae is poor. The mechanism of action is the same as other cephalosporins, which is to inhibit the synthesis of bacterial cell walls.

It has good antibacterial effect on Escherichia coli, Klebsiella, Proteus, Salmonella typhi, Shigella, Citrobacter and other Enterobacteriaceae and Pseudomonas aeruginosa; it is highly sensitive to Haemophilus influenzae, Neisseria gonorrhoeae and Neisseria meningitidis; it also has good effect on various groups of Streptococcus and Pneumococcus, and only has moderate effect on Staphylococcus (methicillin-sensitive strain); it has good effect on most Gram-positive anaerobic bacteria and some Gram-negative anaerobic bacteria; it mainly inhibits the synthesis of bacterial cell walls.

It has a weak antibacterial effect itself and is a competitive, irreversible β-lactamase inhibitor. When used in combination with cefoperazone, it can increase the ability of cefoperazone to resist degradation by multiple β-lactamases and produce a significant synergistic effect on cefoperazone.

It has strong antibacterial activity against Gram-positive bacteria and also has broad-spectrum antibacterial activity against bacteria including Gram-negative bacteria. At the same time, it has strong antibacterial activity against glucose non-fermenting Gram-negative bacteria such as Pseudomonas aeruginosa. The drug has a bactericidal effect and is stable to β-lactamase produced by various bacteria. When used for experimental infection (mice), it shows excellent therapeutic effects. It is sensitive to bacteria resistant to penicillins, other cephalosporins or aminoglycoside antibiotics, especially to Pseudomonas aeruginosa. It has a strong affinity with 1A, 1B and 3 of penicillin binding protein (PBP), inhibiting the synthesis of bacterial cell walls, thereby exerting a bactericidal effect.

It has strong antibacterial activity against Gram-positive bacteria and also has broad-spectrum antibacterial activity against bacteria including Gram-negative bacteria; it has strong antibacterial activity against glucose non-fermenting Gram-negative bacteria such as Pseudomonas aeruginosa; it has bactericidal effect and is stable to β-lactamases produced by various bacteria; it has a strong affinity for 1A, 1B and 3 of penicillin-binding protein (PBP), inhibits the synthesis of bacterial cell walls and thus exerts a bactericidal effect.

It has strong antibacterial activity against Gram-positive bacteria and also has broad-spectrum antibacterial activity against bacteria including Gram-negative bacteria. It has strong antibacterial activity against glucose non-fermenting Gram-negative bacteria such as Pseudomonas aeruginosa. It has a bactericidal effect and is stable to β-lactamases produced by various bacteria. It has a strong affinity with 1A, 1B and 3 of penicillin-binding protein (PBP), inhibiting the synthesis of bacterial cell walls and thus exerting a bactericidal effect.