The invention discloses a rope-controlled gripping device, which comprises two clamping pieces, wherein a connecting shaft is arranged on the top ends of the clamping pieces; the two clamping pieces are axisymmetrical about the connecting shaft and can rotate around the connecting shaft freely; two weights are arranged inside the upper part of each of the two clamping pieces; each clamping piece is provided with a control line; the two control lines are gathered into a control bus at the upper parts; two lifting lines are fixed at two sides of the connecting shaft; the upper ends of the two lifting lines are gathered into one lifting line at the upper ends; when the lifting line is held by one hand while the control bus is held by the other hand, the clamping pieces are expanded along two sides of the bottom; and when the lifting line is held by one hand while the control bus is released by the other hand, the clamping pieces clamp tightly towards the middle part under the action of gravity of the weights, thereby gripping an object. The rope-controlled gripping device has the advantages of low cost and simple structure, can be conveniently used, and is easily popularized.