Abstract: A floor cleaning machine for wet cleaning of a floor surface is provided, the machine having:a frame (1);at least one cleaning member (3), particularly a brush or pad, arranged rotatably on the frame;a first conduit system (6) for feeding a first treatment solution to the floor surface in the region of the cleaning member for carrying out a first cleaning step;a first suction unit (4) having a squeegee;a second conduit system (9) for feeding a second treatment solution to the floor surface located behind the first suction unit as seen in the direction of normal forward movement of the machine, for carrying out a second cleaning step;a second suction unit (5) having a squeegee;tanks for fresh respectively used cleaning solution,whereby both suction units are connected to the used cleaning solution tank.Such machines were found to provide good cleaning performance and favorable hygienic result.