Roadbed settlement deformation detection and early warning system

The invention discloses a roadbed settlement deformation detection and early warning system. The system comprises a roadbed layer; the connecting plate is embedded in the position, close to the bottom, of the roadbed layer; the connecting plate extends to the outer side of the roadbed layer, at least one compression rod is connected to the lower portion of the connecting plate, the other end of the compression rod extends into the horizontal barrel, the horizontal barrel is horizontally arranged at the roadbed layer, the other end of the compression rod is connected with a piston plate, and the piston plate is in sealed sliding connection with the horizontal barrel. Compressed liquid is filled below the piston plate, and when the roadbed layer settles or inclines, the compression rod and the piston plate are driven to extrude the compressed liquid; the settlement amount of the roadbed can be monitored, economic losses caused by excessive settlement can be reduced, and safety accidents caused by road collapse