In the title compound, [Cu(C(17)H(19)FN(3)O(3))(2)], the Cu(II) atom (site symmetry ) exhibits a slightly distorted CuO(4) square-planar geometry defined by two bidentate O,O'-bonded 1-ethyl-6-fluoro-7-(4-methyl-piperazin-1-yl)-4-oxo-1,4-dihydro-quinoline-3-carboxyl-ate (perfloxacinate) anions.