The invention provides a floor cleaning machine. The machine comprises a water tank, wherein a clapboard is arranged in the middle of the water tank; a rectangular opening is arranged on the bottom surface of two water storage cavities respectively; the two water storage cavities are provided with two parallel rollers which have the same specification and are wound by cleaning cloths; one ends of the cleaning cloths are fixed on the rollers and the other ends thereof freely wind the rollers to form a complete circle; the two ends of central shafts of the rollers are fixed on a support; a motor and a battery mated with the motor are arranged on a panel of the support; a water filling hole is arranged on a tank cover above the water storage cavities; rolling shafts mated with the rollers are arranged on the two sides of the rollers; a handle is also arranged on the panel of the support and is installed on a rotating shaft; and an arc spring plate is also arranged at the bottom of the handle. The machine has the characteristics of simple structure, low manufacture cost, low noise and the like.