The utility model relates to an automatic scrubbing and washing device, which is arranged on a backrest of a bathtub wall and consists of a stepping motor, a fixed support, a transmission belt, a driving wheel, a driven wheel, a tensioning wheel, a guide rail, a sliding block, a scrubbing and washing head, a scrubbing and washing head bracket, a first shaft and a second shaft. The fixing support, the first shaft and the second shaft are installed in the bathtub wall, the stepping motor and the guide rail are installed on the fixing support, the driving wheel is installed on a main shaft of the stepping motor, the tensioning wheel and the driven wheel are installed on the first shaft and the second shaft respectively, the transmission belt is installed on the driving wheel, the driven wheel and the tensioning wheel and is parallel to the guide rail, one end of the sliding block is fixed to the transmission belt, the other end of the sliding block is installed on the guide rail, the sliding block can slide on the guide rail, the guide rail plays a role in guiding and limiting the sliding block, the scrubbing head support is installed on the sliding block, the scrubbing head is fixed to the scrubbing head support, the stepping motor serves as a drive to drive the sliding block to move up and down, the sliding block drives the scrubbing head to move up and down, and the scrubbing function can be achieved.