Ground subsidence deformation monitoring and early warning device

The invention relates to the technical field of ground subsidence deformation monitoring and early warning, and discloses a ground subsidence deformation monitoring and early warning device which comprises a monitoring face, a monitoring assembly is inserted into the monitoring face, a subsidence feedback assembly is arranged on the monitoring assembly, a blocking assembly is arranged on the periphery of the subsidence feedback assembly, and a monitoring assembly is arranged on the blocking assembly. The monitoring assembly is internally provided with a vertical column rod, the vertical column rod is fixedly connected with a semicircular arc body, the semicircular arc body is internally provided with a gear, the gear is engaged with an external expansion body, the external expansion body is provided with a pocket net, the external expansion body is provided with a groove, and the groove is internally provided with a groove. The arrangement of the monitoring assembly is different from the situation that an exi