1. Urinary Tract Infection: Simplicity and Complex Pyelonephritis Caused by Escherichia Coli, Proteus mirabilis, Pseudomonas Aeruginosa, Enterobacter cloacae, Ketella Klebsiella, Citrobacter Citridis, and Serratia marcescens As well as recurrent cystitis. 2. Lower respiratory tract infections: pneumonia and bronchitis caused by Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Haemophilus influenzae, Proteus mirabilis, Enterobacter, and Serratia marcescens. 3. Bloodstream infections: bloodstream infections caused by Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Proteus mirabilis, Serratia marcescens, and Enterobacteriaceae. 4. Skin and soft tissue infections: skin and soft tissue infections (including surgical wound infections) caused by E. coli, Proteus mirabilis, Serratia marcescens, Enterobacter, Pseudomonas aeruginosa, Klebsiella pneumoniae, and Citrobacter. , ulcers and burn wound infections). 5. Peritoneal infections such as peritonitis: Abdominal infections caused by Escherichia coli, Ketella odorifera, Klebsiella pneumoniae, Enterobacter cloacae, Pseudomonas aeruginosa, Citrobacter, and Serratia marcescens. Often used in conjunction with metronidazole and other anti-anaerobic drugs. 6. Reproductive tract infections: gynecological infections such as Escherichia coli, Klebsiella pneumoniae, Enterobacter (including Enterobacter cloacae), Pseudomonas aeruginosa, Proteus mirabilis, Endometritis, pelvic inflammatory disease, etc. Need to be combined with anti-anaerobic drugs such as metronidazole.