The invention relates to a working platform for engineering quality management, which includes a box body, a slot, a sub-slot, a fixed motor, a connecting rod, a placement block, a receiving tank, an outlet, a closed cylinder, a closed plate, and a first positioning plate. The bottom of the first positioning plate is connected with a second positioning plate, and one side of the second positioning plate is provided with a rotating motor, and the rotating motor is connected with a driving disc, and one side of the driving disc is integrally connected with thread stripes, One side of the driving disc is provided with three driving blocks matching the thread stripes, the three driving blocks are distributed symmetrically about the center of the driving disc, and the second positioning plate is connected with a third positioning plate sleeved on the outside of the driving disc. Positioning plate, the third positioning plate is provided with a driving groove for driving the block to move, the side of the driving block outside the driving disk is connected with an arc plate, and the third positioning plate is provided with a scale at the opening of the driving groove . The invention has the advantages of detecting the hole diameter of the reinforcement cage and monitoring the building materials in the box.