PURPOSE: To provide piles for mulch tunnel which can be always successfully driven into the soil, even when the piles are hit by means of a pile driver in which a pile is guided to the position, as it slips down.

CONSTITUTION: A pole is bent in an arc form and its middle part in the longitudinal direction is placed on the inclined platforms 22a, 22b mounted to the piling machine, and the pole is guided on the platforms 22a, 22b to slide down toward the specific piling position and the pile for mulch tunnel is driven into the ground at both ends in the longitudinal direction. At that time, the both ends in the longitudinal direction is equipped with a weight Kc heavier than those at any other positions.