Detection device of railway derailer and using method of detection device

The invention discloses a detection device of a railway derailer and a use method of the detection device. The detection device comprises a frame body, a first scale capable of moving in the horizontal direction of the frame body, and a second scale capable of moving in the vertical direction of the frame body, wherein the frame body is provided with a first supporting part matched with a track and a second supporting part matched with a derailing sliding block, the first scale is used for measuring the horizontal distance between the track and the derailment sliding block, and the second scale is used for measuring the vertical distance between the track and the derailment sliding block. According to the detection device of the railway derailer and the using method of the detection device, the irregularity of a derailer sliding block and the actual working distance between the derailer sliding block and the track can be found by rapidly measuring the index data between the derailer and the track, the working