Paddy field leveling machine controlled by laser

The invention discloses a paddy field leveling machine controlled by a laser. The paddy field leveling machine comprises a power machine and a leveling machine body, wherein the leveling machine bodyis arranged at the rear of the power machine, the leveling machine comprises two supporting columns vertically arranged on the power machine, a beam is connected between the upper portions of the supporting columns, a first hydraulic cylinder is connected to the middle of the beam, the bottom of the first hydraulic cylinder is hinged to the beam, the supporting columns are hinged to longitudinal beams respectively, the other ends of the longitudinal beams are connected with an upper balancing stand, a lower balancing stand is connected under the upper balancing stand, the two sides of the middle of the upper balancing stand are hinged to the two sides of the middle of the lower balancing stand respectively, a spring is connected between the lower portion of the upper balancing stand and the upper portion of the lo