Ground subsidence deformation monitoring device

The utility model discloses a ground subsidence deformation monitoring device, and relates to the field of ground subsidence monitoring, the ground subsidence deformation monitoring device comprises a cement column and a monitoring rod which are arranged in a monitoring hole, and the monitoring hole is internally provided with a vertical supporting pipe and a supporting and positioning assembly used for supporting and positioning the monitoring rod; the supporting and positioning assembly comprises a horizontally-arranged supporting rod and a positioning plate, one end of the supporting rod is connected to the supporting pipe, the other end of the supporting rod is fixedly connected with the positioning plate, and the side, away from the supporting rod, of the positioning plate is suitable for abutting against the monitoring rod; at least two groups of supporting and positioning assemblies are arranged, and the multiple groups of supporting and positioning assemblies are distributed in an annular array around