Automatic car washer

The invention relates to an automatic car washer. The automatic car washer comprises a traveling mechanism and a controller, wherein a rotation mechanism is arranged on the traveling mechanism; a rotation shaft of the rotation mechanism is connected with a spray rolling brush holder; the spray rolling brush holder comprises a spray holder and a rolling brush holder; the rolling brush holder comprises a transverse part and a longitudinal part; a rolling brush head is hinged to the lower end of the longitudinal part; a swinging mechanism of the rolling brush head is arranged on the transverse part; and the swinging mechanism of the rolling brush head drives the rolling brush head to move inward and outward through a connecting bar. According to the automatic car washer disclosed by the invention, the rolling brush and a spray technology are combined; the rolling brush moves along with the traveling mechanism around the vehicle body; the rolling brush and a high-pressure spray bar are in cooperative operation; a