The invention discloses a pre-installation construction method for a wire box on a building bricked body. The pre-installation construction method comprises the following steps that the installation position of the wire box is marked, a pre-installation supporting frame is manufactured, the wire box is fixed on the pre-installation supporting frame, the wire box is adjusted through the pre-installation supporting frame to be located in the marked installation position and is positioned, a reserved wire pipe is connected with the wire box, strip-shaped bricks and V-shaped groove bricks are prepared and are bricked in the positions of the wire box and the wire pipe in a sleeved mode, and the gaps among the wire box, the wire pipe and the bricks are filled with bricking mortar to be compacted and flat. After a wall is bricked, the pre-installation supporting frame is detached, and the installation of the wire box is finished. The pre-installation supporting frame is used for finishing the pre-installation of the wire box, the construction procedures such as grooving, punching and wall surface repairing are eliminated, the construction period is shortened, and the pre-installation supporting frame can be used repeatedly, so that cost is saved. In addition, the pre-installation supporting frame can carry out position adjustment, construction is more accurate, and the construction quality is better. A certain distance is kept between the supporting frame and the wall to be bricked in the construction process, a construction space is reserved, and construction is more convenient.