To provide a support for a guard fence, which can keep an offset amount small when avoiding interference between a reinforcing bar of a wheel guard and an anchor.

Characteristically, this support A1 for the guard fence includes a base 1 which is fixed to the wheel guard C on the side of a road, and a support body 2 for supporting a cross beam B; a back-side anchor insertion hole 1b, and a road-side anchor insertion hole 1a positioned to the road with respect to the back-side anchor insertion hole 1b are formed on the base 1; and the back-side anchor insertion hole 1b is composed of a slot which is elongated in the direction of being inclined with respect to a reference line Q along the longitudinal direction of the wheel guard C.