The invention relates to a detection device for the displacement signal of a hydraulic release bearing with sensor, comprising a movable table. An operation platen is centrally mounted on the top plate of the movable table. A displacement simulation sliding table assembly is mounted on one side of the operation platen. A bearing positioning plate is mounted on the lower side of the displacement simulation sliding table assembly. A detection plug manual quick-plugging assembly is mounted on the other side of the operation platen. A bearing connector positioning seat is mounted on the operationplaten between the detection plug manual quick-plugging assembly and the bearing positioning plate. A control module mounting box is arranged at the lower end of the top plate. An LVDT/RVDT signal regulator is arranged in the control module mounting box. According to the detection device for the displacement signal of a hydraulic release bearing with sensor, the structure is simple, and whether the displacement signal of the hydraulic release bearing with sensor can be normally output or not during stroke displacement, and whether the displacement signal of the correspondingly matched vehicletype is consistent or not are simulated, so that the problem of vehicle loading and testing is solved.