It is intended to provide a lotion preparation which exerts an excellent antibacterial effect, is excellent in the stability of active ingredient and does not contain an additive having a safety problem. The lotion preparation contains (a) 1-cyclo-propyl-8-methyl-7-[5-methyl-6-(methylamino)-3-pyridyl]-4-oxo-1,4-dihydro-3-quinolinecarboxylic acid and/or a pharmaceutically acceptable salt thereof, (b) a lower alcohol, (c) a water-soluble polymer and (d) a polyhydric alcohol and the pH of the preparation is in the range of 9 to 12.
