To provide a pile of which the construction is facilitated without requiring any special machine tool or the like and is unlikely to be pulled up from a drive-in surface such as the ground.

A combination pile 1 comprises a main pile 10 which is driven into a drive-in surface and an auxiliary pile 30 which is provided to cross the main pile 10 and driven in while being tilted with respect to a drive-in direction of the main pile 10. A guide mechanism 11 is provided in a position higher than a drive-in surface of the main pile 10 which is driven into the drive-in surface, guides the auxiliary pile 30 in a drive-in direction of the auxiliary pile 30 while regulating the movement of the auxiliary pile 30 in the drive-in direction of the main pile 10, and fixes the auxiliary pile 30 in the position where the auxiliary pile 30 is driven into the drive-in surface.