Dangerous rock deformation monitoring device

The utility model provides a dangerous rock body deformation monitoring device, which relates to the field of geological disaster monitoring, is used for monitoring the deformation of a dangerous rock body on a mountain, and comprises a first fixing frame, a second fixing frame, a controller, an alarm and a solar cell panel, the first fixing frame and the second fixing frame are distributed on the two sides of the dangerous rock body. The first fixing frame is provided with a plurality of infrared emitting units, the second fixing frame is provided with a plurality of infrared receiving units, the infrared emitting units and the infrared receiving units jointly form a plurality of correlation assemblies, and the correlation assemblies are distributed at intervals along the wriggling path of the dangerous rock mass; the plurality of infrared emission units, the plurality of infrared receiving units and the alarm are all in communication connection with the controller. The dangerous rock mass deformation monito