A casing head for spiral grouting in a steel pipe is provided to improve shear stress of the ground and ground mounting force of an injection bolt by inducing even dispersion inside the ground. A casing head for spiral grouting in a steel pipe is mounted on an inlet of an injection bolt having general single pipe structure or dual pipe structure in which a plurality of discharge ports is formed at the outer circumference. The casing head for spiral grouting in a steel pipe comprises a finishing cap and the injection nozzle. The finishing cap(110) covers the inlet of the injection bolt to be sealed. The injection nozzle(120) passes though the finishing cap and is curved in one direction.
