The utility model discloses a rope tripping device used for power line operation, which comprises a first connecting member, a second connecting member, balls, locking bolts and springs, wherein the first connecting member comprises a first column body and a second column body which are hinged with each other, the first column body is provided with a first rope threading hole, one end of the second column body is provided with a columnar bulge, and the columnar bulge is provided with a first clamping hole and a second clamping hole in an opposite manner; the second connecting member comprises a third column body and a fourth column body which are hinged with each other, one end of the third column body is provided with a first connecting arm and a second connecting arm which are oppositely arranged along the outer edge, and the first connecting arm and the second connecting arm are provided with through holes corresponding to positions of the clamping holes; the balls are respectively placed at the inner ends of the through holes of the first connecting arm and the second connecting arm, and a part of each ball extrudes out of the corresponding through hole; the locking bolts are respectively screwed at the outer ends of the through holes of the first connecting arm and the second connecting arm; and the springs are positioned between the balls and the locking bolts. According to the rope tripping device provided by the utility model, the end head of a rope cannot be wound on the cable easily due to inertia during power line operation, thereby saving the time.