The utility model discloses a boring jig tooling for processing a crosshead hole of an injection moulding machine, which is characterized by comprising a base, a location pile, a support bar, a boring sleeve, a boring rod, a side cutting pile, a press plate and a drive pin, wherein the base is provided with two inner holes, the location pile and the side cutting pile are arranged in the inner holes through a washer and a hexagon socket machine screw, the side cutting pile is provided with a side cutting pile inner hole which is provided with a cylindrical pin, the boring sleeve is arranged in the guide hole of the supporting seat of the base and is fixed on the base through a step-shaped screw, the boring rod passes through the inner hole of the boring sleeve, a boring cutter block is arranged in a boring rod rectangular slot of the boring rod, one end of the boring rod is provided with a drive pin, and the location directions of the location pin and the side cutting pile are mutually vertical to that of the boring sleeve. The utility model has high production efficiency and low processing cost and can ensure the processing quality.