The utility model discloses a jack -up overhead traveling crane longitudinal movement device, include: one or two indulge and move power device, trolley, heavy object and move fortune ware, chain chain and sprocket, the track of chain with two the rail is parallel and both ends fixed, set up the girder web between two rail, every is indulged and moves power device and pass through the chain chain and sprocket and connect trolley, sprocket and chain meshing, the sprocket moves power device drive rotation and drives trolley longitudinal movement by indulging, it is parallel with the rail to move the direction from north to south, the wheel that the heavy object moved the fortune ware just bears trolley for roller -type, and every heavy object moves the fortune ware and includes support, raceway board and a plurality of parallel arrangement roller bearing, and every heavy object moves the fortune ware to be connected with trolley's bottom through its support, and the mutual interlock of raceway board and roller bearing is arranged in under the support, the chain is perpendicular with the axle that the heavy object moved the roller bearing of fortune ware. The utility model discloses a jack -up overhead traveling crane longitudinal movement device can alleviate trolley to girder web pressure for the operation is safer convenient.