Outer wall cleaning device

The outer wall cleaning device comprises a main control single chip microcomputer, a base table, a cleaning mechanism and a moving mechanism, the cleaning mechanism comprises a foam water tank, a cleaning brush, a first electric spray head and a rotating motor, the first electric spray head and the rotating motor are electrically connected with the main control single chip microcomputer, and the foam water tank is arranged on the base table. The moving mechanism comprises a first fixing plate, a second fixing plate and an electric telescopic rod electrically connected with the main control single-chip microcomputer, the first fixing plate is hinged to the second fixing plate, the fixed end of the electric telescopic rod is arranged on the base table, and the moving end of the electric telescopic rod is connected with the first fixing plate. The first electric spray head is communicated with the foam water tank and arranged on the second fixing plate, the fixed end of the rotating motor is arranged on the seco