The invention discloses a combined type building underpinning device, which comprises an underpinning device body, wherein the underpinning device body comprises a disk-beam structure, a supporting part and a connecting device; the disk-beam structure is used for supporting a building, the supporting part is arranged under the disk-beam structure, the connecting device is used for connecting the disk-beam structure and fixing the disk-beam structure to the supporting part, and a movable component for moving the underpinning device body is arranged under the supporting part. The combined type underpinning structure disclosed by the invention can provide larger strength and rigidity, is especially suitable for building moving projects with shallow foundation buried depth and large upper structure load and SPMT platform trailer moving projects with a larger span. The combined type building underpinning device disclosed by the invention can be used repeatedly, so that construction cost isreduced.