The multipurpose steel structure decorative ceiling comprises an inner wall and a steel structure top frame, a limiting cylinder is installed at the bottom end of the steel structure top frame, the inner wall is located on one side of the limiting cylinder, a guide
pulley is installed at the position, on the other side of the limiting cylinder, of the bottom end of the steel structure top frame, and a top plate is rotationally installed on the upper surface of the inner side wall of the inner wall. An inserting rod is movably installed at the top end of the top plate in a limiting mode through a limiting component, an inserting mechanism is installed between the inserting rod and the limiting cylinder, a multipurpose half hole is formed in the surface of the end, away from the inner wall, of the top plate, a traction mechanism is cooperatively installed between the multipurpose half hole and the guide
pulley, and a lamp frame is installed at the bottom end of the top plate below the multipurpose half hole. According to the ceiling and the
assembly construction method thereof, by arranging a series of structures, the
assembly direction can be changed, construction is facilitated, meanwhile, hole body covering is flexibly conducted by means of the lamp frame, the attractiveness is improved, the construction steps are saved,
assembly construction is conducted by means of a semi-hoisting mode, and follow-up overhauling, wiring and other operations are facilitated.