The invention relates to an automatic bowl brush. The automatic bowl brush consists of a brush head, a brush head motor, squeezing claws and a squeezing claw motor, wherein the brush head is driven bythe brush head motor to make rotating motion; a brush head transmission device is connected between the brush head and the brush head motor; the squeezing claw motor drives the lower part of a lifting platform of a spiral curve lifting platform to rotate through a squeezing claw transmission device so as to drive the upper part of the lifting platform to move upwards, and drive a sleeve, a claw disc and the squeezing claws to move upwards; the squeezing claws are contracted when contacting a stop block so as to squeeze the brush head; and the brush head motor and the squeezing claw motor arecontrolled by a singlechip control circuit. The automatic bowl brush saves time and labor when being used, saves energy, is environment friendly and convenient for operation, and has higher application value.