Building external wall quality defect detection system and detection method

The invention relates to the technical field of prefabricated building defect detection, in particular to a building outer wall quality defect detection system and method. A building outer wall quality defect detection system comprises a wallboard body, a ground, a side supporting body and a top plate, a guide mechanism used for guiding the wallboard body is arranged on the upper side wall of the ground, and two symmetrically-arranged supporting plates are detachably connected to the top of the side supporting body through fasteners. Compared with the prior art, the building outer wall quality defect detection system has the beneficial effects that the wall plate body is more convenient and quicker to mount and dismount, and meanwhile, the wall plate body is conveniently centered, positioned and clamped, so that the wall plate body is more convenient to mount, the mounting effect is better, and the detection efficiency is improved. And therefore, double clamping in the horizontal and vertical directions can b