The invention provides a six-tonner heavy type cableway and a mounting method thereof, and relates to a transporting cableway. The six-tonner heavy type cableway comprises a steel wire rope system, aground anchor system, a support system, a trolley system, a traction system and a connection system. The steel wire rope system comprises a bearing cable, a traction cable and a support bracing wire.The ground anchor system comprises a bearing cable ground anchor, a traction machine ground anchor, a corner block ground anchor and a support bracing wire ground anchor. The trolley system comprisesa trolley, a chain hoist and a lifting belt, wherein the chain hoist and the lifting belt are arranged below the trolley. The traction system comprises a mechanical type traction machine. The connection system comprises a suspension center pulley, a measuring cell, a chain hoist, a corner block and a saddle bolt, the bearing cable is of a double-cable structure, the ground anchors are steel plateground anchors, and the bearing cable ground anchor is fixed through pouring of C25 plain concrete. The support system comprises a plurality of sets of supports, each set of supports comprises a crossbeam, a saddle and supporting legs symmetrically arranged on the lower portions of the two ends of the cross beam. The cableway is easy to erect, the transporting capacity is high, the transporting efficiency is improved greatly, and the problem that an existing four-tonner cableway cannot transport goods which are more than four tons is solved.