Elevator guide rail precision calibration device

An elevator guide rail precision calibration device comprises a lower clamping assembly and an upper clamping assembly. The lower clamping assembly comprises a first lower clamping block, a second lower clamping block and a first fastening component. The upper clamping assembly comprises a first upper clamping block, a second upper clamping block, a second fastening component and a driving assembly. The first upper clamping block and the second upper clamping block are both rotationally connected with a transverse roller and a longitudinal roller. The first upper clamping block is fixedly connected with a first light display plate which corresponds to the first laser transmitter and is provided with scales. The upper clamping block I and the upper clamping block II are provided with a laser transmitter II and a laser transmitter III which respectively irradiate two guide rail surfaces of the guide rail, and the upper clamping block I is fixedly connected with a light display plate II and a light display plate