The invention relates to new substituted quinoline derivatives presented in general formula (1a), or general formula (1b) or general formula (1c), a medical acid added salt, a stereochemical heterogeneous formula and a tautomeric form thereof. The compound can be used for curing mycobacterium diseases, in particular to diseases caused by pathogenic mycobacteria, such as mycobacterium tuberculosis, mycobacterium bovis, mycobacterium avium and mycobacterium marinum and is particularly defined as following: R1 is mutually independent bromines; p is equal to 1, R2 is an alkoxy, and R3 is a randomly substituted phenyl or naphthyl; q is equal to 1, R4 and R5 are mutually independent hydrogen and a methyl or an ethyl, and R6 is hydrogen; r is equal to 0 or 1 and R7 is hydrogen. The invention also relates to a composition of the compound, applications of the compound of the composition to medicines for curing the mycobacterium diseases, and a method for preparing the compound of the composition, which comprises a medical carrier and is used as activated ingredient of curable effective quantity.