Movable supporting device for building construction

The utility model discloses a movable supporting device for building construction, which comprises a bottom plate, a motor is fixed at the upper end of the bottom plate, a power shaft of the motor is a threaded rotating rod, the threaded rotating rod is in threaded connection with an internal thread frame, a transverse plate is fixed at the upper end of the internal thread frame, a rubber cushion block is fixed at the upper end of the transverse plate, and a supporting frame body is fixed at the upper end of the rubber cushion block. A rubber column is arranged on a supporting frame body, a motor drives a threaded rotating rod to move up and down, so that an inner threaded frame on the threaded rotating rod moves up and down, meanwhile, a transverse plate is limited through telescopic rods at the four ends, and it is guaranteed that the transverse plate stably moves up and down; the step on the connecting frame goes into the supporting frame body, meanwhile, the hinge plate can only be pushed inwards to compr