Gentamicin injection needs to be diluted and injected intravenously, with different dosages for pediatrics and adults. Gentamicin Sulfate Injection is often used clinically for the treatment of serious infections caused by sensitive gram-negative bacilli such as Escherichia coli, Klebsiella spp. and Pseudomonas aeruginosa, such as sepsis, lower respiratory tract infections, intestinal infections and so on. 1.Adults: diluted intravenous drip, according to the weight of a time to give 1 ~ 1.7mg / kg every 8 hours, or a time of 80mg. in 50 ~ 200ml of 5% dextrose injection or 0.9% sodium chloride injection to add a dose of once a day once a day when the intravenous drip added to the amount of fluid should be greater than 300 ml, 7 ~ 14 days for a course of treatment. In order to avoid neuromuscular blocking effect, it should be titrated slowly within 30～60 minutes. 2. Pediatrics: diluted intravenous drip, give 1.7mg/kg at a time, every 8 hours, or 2.5mg/kg at a time, every 12 hours, 7 ~ 14 days as a course of treatment, during which the blood concentration needs to be monitored. The process of medication may cause hearing loss, tinnitus and other ototoxic reactions, occasional rash, nausea, vomiting and other adverse reactions, allergic to aminoglycosides is prohibited, unauthorized use of gentamicin injection is strictly prohibited. Drugs need to follow the doctor’s instructions for rational application.