Building scaffold reinforcing device

The utility model relates to the technical field of scaffolds, and provides a building scaffold reinforcing device which comprises a bearing table, supporting legs are fixedly connected to the four corners of the bottom of the bearing table, universal wheels are installed at the bottoms of the four supporting legs, sleeve rods are slidably connected to the bottoms of the four supporting legs in a sleeved mode, and the sleeve rods are connected with the universal wheels in a sleeved mode. The bottoms of the four sleeve rods are fixedly connected with two supporting plates which are symmetrical left and right, and a first connecting plate is fixedly connected between every two sleeve rods which are symmetrical left and right. After the scaffold is moved to a construction position, the second connecting plates can move downwards under the action of the lifting assembly, the two first connecting plates and the four sleeve rods can be driven to move downwards synchronously, and therefore the four sleeve rods can m