The invention relates to a floor-cleaning machine, comprising a chassis (14), a suction bar apparatus (30), which is arranged on the chassis (14), a dirt-holding container (46), and a retaining apparatus (64), which retains the dirt-holding container (46) movably in relation to the chassis (14), wherein the dirt-holding container (46) has a dirt-holding position (52) and a dirt-discharging position (90) by means of the retaining apparatus (64), and, in the dirt-discharging position (90), the dirt-holding container (46) is positioned at a height distance transverse to a chassis longitudinal axis (22) and a distance parallel to the chassis longitudinal axis (22) in relation to the dirt-holding position (52), wherein the retaining apparatus (64) comprises a parallelogram guide (70) having a first link (72), which is articulated to the dirt-holding container (46) and to the chassis (12) or an element (66) connected to the chassis (12), and having second link (74), which is articulated to the dirt-holding container (46) and to the chassis (12) or an element (66) connected to the chassis (12), wherein the first link (72) and the second link (74) are oriented parallel to each other and the retaining apparatus (64) is designed in such a way that, in the event of a transition from the dirt-holding position (52) to the dirt-discharging position (90), a pivoting orientation of the dirt-holding containing (46) in relation to the chassis (14) is maintained, and wherein a tipping drive (98) is associated with the dirt-holding container (46), by means of which tipping drive the dirt-holding container (46), while in the dirt-discharging position (90), can be brought into an emptying position (108) for dirt collected in the dirt-holding container (46) by means of tipping.