Roadbed settlement monitoring device

The utility model relates to the technical field of roadbed monitoring, and discloses a roadbed settlement monitoring device which comprises a device bottom plate, a partition plate is fixedly arranged at the top of the device bottom plate, a winding seat is fixedly arranged in the middle of one side of the partition plate, a winding disc is fixedly arranged in the winding seat, and a measuring and calibrating tape is wound around the winding disc. A positioning hole is fixedly formed in the surface of the measurement calibration tape, a calibration nail is arranged in the positioning hole, and a calibration column is arranged at the top of the calibration nail. According to the utility model, the calibration nails are fixed on the road surface at equal intervals through the positioning holes in the measurement calibration tape, the calibration columns are arranged on the positioning nails by utilizing the adsorption arrangement of the calibration nails and the adsorption magnet blocks subsequently, the laser