Floor brush structure of washing and mopping machine

The utility model belongs to the technical field of cleaning equipment, and discloses a floor brush structure of a washing and mopping machine. The floor brush structure of the washing and mopping machine comprises a floor brush shell, a rotating seat, a driving mechanism, a rolling brush, a bearing, a connecting shaft and a connecting plate, the rotating seat is rotationally arranged on the floor brush shell and is in transmission connection with the driving mechanism, one end of the rolling brush is detachably connected with the rotating seat, and an outer ring of the bearing is fixedly arranged at the other end of the rolling brush; the connecting shaft is fixedly connected with an inner ring of the bearing, one end of the connecting plate is provided with a connecting groove, the other end of the connecting plate is provided with a first clamping part, the connecting shaft is inserted into the connecting groove, the floor brush shell is provided with a second clamping part, and the first clamping part is