The utility model relates to an auxiliary tool for hoisting a precast block, and particularly relates to a hoisting piece for a precast block. The hoisting piece comprises a hoisting ring, a central spindle, a split expansion loop, and upper and lower clamps, wherein the hoisting ring is fixedly connected with the upper end of the central spindle through a thread; the lower end of the central spindle is provided with a pyramidal section; the expansion loop is of a split structure formed by combing a plurality of equation blocks; grooves are formed in the upper and the lower end of each equation block respectively; the upper clamp and the lower clamp are arranged in the grooves respectively; the equation blocks are fixedly connected together through the upper and the lower clamp; the inner surface of the expansion ring is matched with the outer surface of the pyramidal section of the central spindle. The hoisting piece is simple in structure, reasonable in design, convenient to operate and use, safe and reliable during a hoisting process, low in using cost, easy to process and suitable for popularization and implementation, and has various structural styles and more embodiments.