Building construction supporting device

The utility model relates to the technical field of building construction, and discloses a building construction supporting device which comprises a base, telescopic rods are fixedly installed on the left side face and the right side face of the base, threaded holes are formed in the outer side faces of the telescopic rods in a penetrating mode, and a vertical plate, a fixing foot stool and a supporting column are fixedly installed on the top face of the base. A direct-current motor is fixedly installed on the right side face of the vertical plate, an output shaft of the direct-current motor is fixedly connected with a transmission rod, a crown-shaped gear is fixedly installed on the right side face of the transmission rod, a groove is formed in the top face of the supporting column, a bearing is fixedly installed in the groove, and a spiral column is fixedly installed in the bearing. According to the size of a construction site, one or more devices are selected to be symmetrically placed, the telescopic rod