To save the labor of the holding of an auger screw.

The holding fixture 1 for the auger screw has the first engaging section 3 extended from a base section 2 and the second engaging section 4. The blade 11 of the auger screw 10 is engaged so as to be held by the first engaging section 3 and the second engaging section 4, the base section 2 is supported at the upper end of a steel pipe 20, and the auger screw 10 is held at the upper end of the steel pipe 20. An extending section 5 is extended from the base section 2 on the outside of the outer circumference of the steel pipe 20.