The invention discloses a casting-rolling forming method for a shaft workpiece without a material head. The method is characterized in that a casting die is manufactured and embedded in a sand mold box, a casting mold is formed, a pouring gate and a dead head are arranged in the sand mold box, a pouring channel slot is formed, an air outlet hole is formed through stabbing, and then, molten steel is poured into the casting die; after pouring is over, cooling is conducted till the temperature of the core part of a casting ranges from 1,100 DEG C to 1,200 DEG C and the surface temperature ranges from 750 DEG C to 800 DEG C; then, shakeout is conducted, and a casting bar with the two ends in the shape of a circular truncated cone is taken out; and finally, the casting bar is immediately placed on a cross wedge rolling mill to be rolled, and the shaft workpiece without the material head is obtained through rolling under the condition that the fracture surface shrinkage rate of a rolled piece is controlled to range from 75% to 95%. The casting-rolling forming method has the beneficial effects that the shaft workpiece is machined through a method that casting and cross wedge rolling are combined, when the casting bar is rolled in the cross wedge rolling mill, a concave core of the end portion can be better avoided, the product material utilization rate is further increased, and the quality of a rolled piece is good.