Piperacillin sodium tazobactam for injection has anti-infective effects and belongs to the antibiotic class, mainly treating some infections caused by sensitive bacteria, such as infections of the respiratory tract, such as pneumonia, bronchitis, acute bronchitis, acute attacks of chronic bronchitis, bronchiectasis with infection, acute lung abscess, bronchial asthma with infection, lung abscess with infection, etc. Urinary tract infections include simple urinary tract infections and complicated urinary tract infections. It is usually administered intravenously at 2.5-5g once every 12 hours. Adverse reactions are generally gastrointestinal, skin, and allergic reactions.