The invention relates to 7-(3-aminomethyl-4-substituted-benzyloxyimino-1-pyrrolidinyl)naphthyridinone
carboxylic acid compounds disclosed as Formula (I), a preparation method and medical application thereof, and an
antituberculosis drug composition using the compounds as effective components, particularly, 6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridinyl-3-
carboxylic acid compounds, wherein the 1-
substituent group is (1R,2S)-2-fluorocyclopropyl group, the 7-
substituent group is 3-aminomethyl-4-substituted-benzyloxyimino-1-pyrrolidinyl group, and R represents
fluorine,
chlorine,
bromine, methyl, methoxy, dimethoxy or methynedioxy group.