The invention belongs to power transmission and transformation construction appliances of the power industry and particularly relates to a buffering device for high type object hoisting. The bufferingdevice comprises a buffering body (1), connecting pieces (2), a supporting frame (6), a pulley shaft frame (3), a pulley shaft (4) and a pulley (5) and is characterized in that a plurality of steel wire rope partition bars (1-2) are arranged on the periphery of the barrel-shaped buffering body (1), symmetrical buffering body fixing holes (1-1) are formed in the two end faces of the buffering body(1), and the two parallel connecting pieces (2) are fixed to the two end walls of the buffering body; the supporting frame (6) is fixedly connected to the right ends of the two parallel connecting pieces, a steel wire rope penetrating groove body (11) is fixed in the intersection positions of the lower portion of the supporting frame (6) and the corresponding connecting piece, a locking block base (12) is fixedly arranged on the oblique face of the steel wire rope penetrating groove body, and a pressing block (8) is arranged on the steel wire rope penetrating groove body and slidably matchedwith the supporting frame (6); and a locking block (10) is movably mounted on the upper portion of locking block base (12) through a hinge. According to the buffering device for high type object hoisting, when high buildings such as an iron tower are hoisted in the electric transmission line, construction safety can be ensured, the work efficiency is greatly improved, the power outage time and construction operation period are shortened, and manpower and materials are saved.