Slope stability monitoring device

The invention belongs to the technical field of deformation monitoring, and particularly relates to a side slope stability monitoring device which comprises a monitoring plate fixedly arranged on a side slope, the monitoring plate is provided with an underground pipe, the lower end of the underground pipe is embedded into the side slope, a storage pipe is fixedly arranged in the underground pipe, and the storage pipe is connected with the storage pipe. A first movable column and a second movable column are arranged in the storage pipe in a sliding mode, and mounting plates are fixed to the ends of the first movable column and the second movable column. According to the invention, after the optical fiber sensor and the piezoelectric sensor are embedded into the deep part of the side slope, the limiting rod is inserted into the opening and the fixing opening and fixed through the locknut, so that the stability of the optical fiber sensor and the piezoelectric sensor is ensured, and the settlement, contraction,