To directly give a rotary drive force near the lower end on which the maximal excavation resistance is caused by a drive shaft inserted in a pipe pile hole originally possessed by the pile to remove the cause of twist between the upper and the lower ends of a conventional pipe pile and soundly embed the pile.

In the embedment method of a pipe pile 6, the pile 6 is embedded in a vertical hole 28 while self-digging the hole 28 into the ground 25 by rotation of the pile 6. A drive shaft 17 is inserted into the pile hole 15 from the upper end of the pile 6. A motor 26 is installed in the vicinity of the upper end of the shaft 17. The shaft 17 is rotated by the rotary force of the motor 26. The vicinity of the lower end of the shaft 17 is detachably engaged with the pile 6 in the near position of the lower end of the hole 15. The rotary force of the shaft 17 imparts near to the lower end of the pile 6 to self-dig the vertical hole 28.