The utility model provides an anchor rope is cable protection device down, it includes the dado sleeve, the dado sleeve inserts the downthehole portion of anchor rope of basement rock, and the outside suit in anchor rope hole has a handle, the downthehole portion of dado sleeve and anchor rope has inserted the anchor rope steel strand wires. The dado sleeve cooperatees with the head pore wall in anchor rope hole including straight wall section, the outside of straight wall section, be provided with arc opening section after the straight wall section, arc opening section is the horn mouth form, and its direction of opening one's mouth widely adopts the circular arc transition towards the outside in anchor rope hole, the junction between arc opening section and the straight wall section. Can protect the cable body down during the cable steel strand wires leather sheath do not damaged by the drill way basement rock, reduce the engineering volume of restoreing with useless cable. And simple structure, operation are swiftly, safe and reliable.