In this study, in vitro activity of flouroquinolone group antibiotics againts Listeria strains was investigated. For that reason ofloxacine, ciprofloxacine, pefloxacine, norfloxacine against 111 investigated.
 Flouroquinolone inhibited DNA gyrase enzyme microorganisms.
 found respectively enoxacine 73. 9 % , ciprofloxacine 63. ofloxacine 63.1 and pefloxacine 46.8 %.