The invention provides a semi-blind hole forge piece hole-shrinking forging method. According to the semi-blind hole forge piece forging method, a traditional tool is used for achieving the forge piece hole-shrinking process by changing the deformation process of a material and controlling deformation. The method mainly comprises the following steps of (1) flattening the tail of an ingot and cutting a dead head flat; (2) conducting upsetting; (3) punching a hole with a solid punch pin; (4) broadening the hole through a mandrel until the big-diameter end of a traditional common core rod can penetrate into a blank to be drawn out; (5) drawing out the traditional common core rod to form a preformed blank; (6) erecting the blank to conduct upsetting and smoothening the end faces of the blank;(7) conducting hole-shrinking forming; and (8) conducting surface finishing. Through the method, raw materials are saved; the cost of the raw materials is lowered; the machining allowance is reduced;the machining time is shortened; the production efficiency is improved; consumption during the production process is reduced; the internal metal structure and metal flow line at the intersection of steps of an inner hole of a forge piece are improved, and a continuous metal fibrous structure of the forge piece is maintained after machining; the anti-fatigue performance of the forge piece is improved, and the service life of the forge piece is prolonged.