Flexible jacking tool for subway roof

The utility model discloses a flexible jacking tool for a metro roof, which comprises a lateral jacking structure for jacking two side walls of the metro roof along the width of the metro roof, the lateral jacking structure comprises a lateral base and a supporting flat plate for supporting the side walls of the metro roof, and the supporting flat plate is mounted on the lateral base. The supporting flat plate extends in the width direction of the subway roof, one end of the supporting flat plate is hinged to the side base, the other end of the supporting flat plate is movably arranged on the side base and rotates around the hinge point along the vertical plane, and the angle between the supporting flat plate and the horizontal plane is adjusted by rotating the supporting flat plate around the hinge point of the supporting flat plate and the side base. When the included angles between the side walls of the subway roof and the horizontal plane are different, the supporting flat plate can adapt to the side wall