The invention discloses an automatic rolling brush device, which comprises a lower rail, wherein a lower part slide block is arranged on the lower rail, an operation rack parallel to the lower rail is fixedly arranged on the lower rail, a transverse servo motor is fixedly arranged on the lower part slide block, a transverse operation gear is fixedly arranged on an output shaft of the transverse servo motor, the transverse operation gear is engaged with the operation rack, the top surface of the lower part sliding block is fixedly provided with a vertical transverse rod, the top of the vertical transverse rod is hinged to a support rolling wheel, the support rolling wheel is pressed and leaned on the top surface of a roof, a vertical rack is fixedly arranged in the vertical transverse rod, a sliding sleeve is inserted in the vertical transverse rod in a sleeving way, a vertical servo motor is fixedly arranged on the sliding sleeve, a vertical gear is fixedly arranged on an output shaft of the vertical servo motor, the vertical gear is engaged with the vertical rack, a clamping frame is fixedly arranged on the sliding sleeve, and a rolling brush is fixedly arranged in the clamping frame. The automatic rolling brush device has the advantages that the leftward rightward and upward moving can be automatically carried out, the automatic wall painting can be carried out when a rolling tube brush is arranged on the automatic rolling brush device, the effect is good, and the manual work quantity is reduced.