The utility model discloses a laser surveying device of error of centralization, be by the first axle that awaits measuring, laser emission device, second await measuring the axle and the laser receiving device constitute, the laser emission device fix first await measuring epaxial, the laser receiving device fix await measuring at the second epaxial, laser emission ware in the laser emission device utilizes two cross laser instruments to jet out the laser ray of the certain cross of four stripe pitchs, and the laser receiving device can detect the exact position and the live width of the laser ray that the laser emission device launches. The utility model discloses can can measure two axles await measuring error of centralization of axle of first await measuring axle and second promptly indirectly a position, have quick, accurate, simple and convenient easy-to-use characteristics, can replace traditional method totally. The utility model discloses can be applied to the detection and the adjustment of rotary machine two hookup revolving axle errors of centralization in installation, debugging and maintenance process.