To provide a working machine for pulling out a pile, which enables assembling operations for a casing etc. to be easily performed even on a narrow site, because it can perform not only a pull-up operation but also a push-in one.

In this working machine 1 for pulling out the pile, a revolving superstructure is installed on an undercarriage via a slewing gear; an auger driving unit is mounted in an almost longitudinally tiltable manner at the leading end of an articulated arm which comprises an arm and a boom, provided on the revolving superstructure; the casing with an inner diameter larger than a diameter of the pile is mounted on the auger driving unit; an excavating claw is arranged in the lower portion of the casing; an inclined or spiral excavating blade is provided on the periphery of the lower portion; and the casing 7 is connected to the auger driving unit 6 in a forward, backward, rightward and leftward tiltable manner.