BIM (Building Information Modeling)-based road and bridge design and construction auxiliary device

The invention discloses a BIM (Building Information Modeling)-based road bridge design and construction auxiliary device, which is characterized in that auxiliary devices are respectively arranged on two bridge stand columns, the two auxiliary devices are respectively provided with a laser transmitter and a laser receiver, each auxiliary device comprises a base, a transmission mechanism is rotatably arranged above the base, and a laser transmitter is arranged on the transmission mechanism. One side of the transmission mechanism is connected with a support, the other side of the transmission mechanism is provided with a measuring mechanism, the support is fixedly connected with a horizontal adjusting mechanism, a working box is arranged in the horizontal adjusting mechanism, and the laser transmitter and the laser receiver are oppositely arranged on the working box respectively. The vertical column height difference measurement and the vertical column spacing measurement are realized, the operation is simple,