Layering and in-situ monitoring device and method for ground subsidence

The invention relates to a layering and in-situ monitoring device and method for ground subsidence. The layering and in-situ monitoring device comprises a descending device, a sensor probe and a monitoring instrument, wherein the descending device is used for bearing the sensor probe and reaching positions of different rock layers; the sensor probe is connected with the monitoring instrument by a cable and is used for detecting different rock layers from bottom to top and send signals back to the monitoring instrument; the monitoring instrument is used for controlling the action of the descending device, receiving the signals sent back by the sensor probe and recording the dip-angle value of the current position of the sensor probe and the height of the sensor probe rising from the bottom part according to the received signals. The layering and in-situ monitoring device has the beneficial effects that layering and automatic monitoring for the ground subsidence is realized by utilizing a drilled hole.