Neomycin sulphate is a kind of aminoglycoside antibiotics.This product to staphylococcus aureus (methicillin sensitive strains), corynebacterium genus, e. coli, klebsiella bacteria genera, proteus and enterobacteriaceae bacteria have good antibacterial effect, for each group streptococcus, streptococcus pneumoniae, enterococcus is active.This article pseudomonas aeruginosa, oxygen resistance.Bacteria to streptomycin, kanamycin and neomycin, have a partial or total cross resistance between gentamycin.Neomycin systemic medication has significant nephrotoxicity and ototoxicity, is currently limited to oral or topical application.