The utility model discloses a reclaimed soil surface soil thickness measuring device. Workbench, balance plates are fixedly connected to the two sides of the top of the workbench. A sliding rail is arranged on the front surface of the balance plate; a sliding block is connected into the sliding rail in a sliding manner; a scale is horizontally and fixedly connected to the top of the front surfaceof the balance plate; the bottom of the balance plate is fixedly connected with a supporting plate; positioning plates are fixedly connected to the bottoms of the opposite sides of the two supportingplates; a grounding bolt is vertically mounted on the positioning plate in a penetrating manner; supporting frames are fixedly connected to the two sides of the top of the workbench correspondingly, baffles are vertically and fixedly connected to the opposite sides of the two supporting frames correspondingly, a driving motor is movably connected between the two baffles, sliding rods are fixedly connected to the two sides of the driving motor correspondingly, and through rails matched with the sliding rods are vertically formed in the baffles. The device is ensured to be vertical to the ground, the thickness measurement precision is high, the measurement is convenient, and the working efficiency is high.