The invention discloses a high-rise exterior wall surface cleaning device. The device comprises a cleaning device body and a high building, the cleaning device body comprises fixing seats, mounting plates, driving shells, a roller, a notch, a sliding slot, a rotating roller, a vertical frame, a horizontal frame, a cleaning cavity and a cleaning roller, a roof is arranged on the top of the high building, two parallel fixing seats are arranged on the bottom of the high building and the middle of the roof, the two fixing seats are fixedly connected by the mounting plate, the driving shells are fixedly mounted on the upper ends of the two mounting plates, fixing blocks are fixedly mounted on the lower ends of the fixing seats, roller shells are arranged at the lower ends of the fixing blocks,and rotating shafts are arranged in the middles of the roller shells. Two winding mechanisms are arranged at the high building and the bottom of the building, a steel wire is driven to be lifted and lowered through the two winding mechanisms, the cleaning cavity is installed in the middle of the steel wire, the cleaning roller on the side of the cleaning cavity directly acts on an exterior wall body, the safety factor is higher, and an elastic structure is mounted inside the cleaning cavity, thereby improving the cleaning efficiency of the device.