The invention relates to a maintenance platform monolithic movement construction method. firstly, the two sides of each suspender connected with a maintenance platform are both connected with a C-type bearing lifting lug, the middle of the upper end of each C-type bearing lifting lug is connected with a bearing and installed on a lower flange plate of a roof beam, and the lower end of each C-type bearing lifting lug is connected with the corresponding suspender; a traction lifting lug is connected with the upper end of the suspender on the side corresponding to the translation direction of the maintenance platform, and each traction lifting lug is connected with an electric chain block; every two corresponding suspenders on the front and rear sides of the maintenance platform are connected into a whole through stay bars, and all the stay bars are connected into a whole through connection rods; connection plates between the roof beam and the suspenders are cut so that the roof beam and the suspenders can be disconnected, the maintenance platform horizontally moves to an installation position under the traction function of the electric chain blocks, the suspenders and the roof beam are connected into a whole through the connection plate, and finally the connection rods, the stay bars, the C-type bearing lifting lugs, the electric chain blocks and the traction lifting lugs are detached to complete translation of the maintenance platform. The method is convenient and quick to use in construction and improves work efficiency.