Building wall plastering equipment

The utility model relates to the field of building construction, and discloses building wall plastering equipment which comprises a support and a rolling brush, the support is of a frame-shaped structure with an upward opening, a transverse plate is arranged at the bottom of the support, vertical plates are arranged on the left side and the right side of the support, the outer sides of the vertical plates are movably connected with vertical frames, and the rolling brush is movably connected between the vertical frames on the left side and the right side. A vertical sliding groove is formed in a vertical plate of the support, a limiting plate is connected into the vertical sliding groove in a sliding mode, the bottom of the limiting plate extends downwards and penetrates out of the bottom of the support, and an operator pulls the bottom of the limiting plate with hands to relieve the locking state of the vertical frame. A locking block is fixedly connected to the top of the limiting plate, a stabilizing frame