The invention relates to a supporting tool, and particularly discloses a high pre-stressing force pressure yielding and equalizing coupling anchorage device for soft rock supporting. The high pre-stressing force pressure yielding and equalizing coupling anchorage device comprises a cable body and a rod body capable of bearing more than 1ton of installation loads, the cable body is connected with the rod body through a connecting piece, a locking head is arranged at the other end of the cable body, a plurality of bird-nest-shaped hollow spheres made of steel twisted ropes are arranged on the cable body, a tray, a gasket, at least one pressure yielding and equalizing ring, a gasket and a damping nut are sequentially arranged at the other end of the rod body from inside to outside, and the damping nut is in threaded connection to the end portion of the rod body. The connecting piece is a cylinder with internal threads at the two ends, the two ends of the connecting piece are in threaded connection with the rod body and the cable body respectively, and an injection hole for allowing an anchorage agent to be injected is formed in the connecting piece. The high pre-stressing force pressure yielding and equalizing coupling anchorage device has the advantages that using materials are saved, the tunnel cross-section using rate is high, supporting can be timely carried out, the labor strength is low, the economic benefits are high, and the adaptability to tunnel surrounding rock deformation is good.