Ceftriaxone is a cephalosporin, an antibacterial drug that belongs to the third generation of cephalosporins. Ceftriaxone exerts its antibacterial effect mainly by inhibiting the synthesis of bacterial cell walls. Ceftriaxone has relatively broad-spectrum antibacterial activity against Gram-negative and positive bacteria, and is stable against most β-lactamases, and has certain antibacterial effect against Staphylococcus aureus, coagulase-negative cocci, Streptococcus pyogenes, and also has certain antibacterial activity against Haemophilus influenzae, Enterobacter aerogenes, Escherichia coli, Enterobacter cloacae among negative bacteria . Clinically, ceftriaxone can be used for infectious diseases caused by sensitive bacteria, such as for sepsis, meningitis, and skin soft tissue infections, as well as for respiratory system infections, such as pneumonia, and for kidney and urinary system infections, and also for pre-surgical prophylaxis. In conclusion, ceftriaxone is an antibacterial drug mainly used for the treatment of infectious diseases.