The invention relates to a tied rope contracting and releasing device, in particular to a tied rope contracting and releasing device with controllable tension, controllable contracting and releasing length and a measurable wire inlet posture angle. The tied rope contracting and releasing device comprises a servo motor, a wire reel, a servo motor driver, a guide wheel vertical plate, a meter, a tension sensor, a tension adjuster, an angle measurement fixing rack, a bottom plate, a motor encoder, an electromagnetic brake, a speed reducer, a motor fixing rack, a gear key, a mounting ear and the like.