To provide a structure for attaching a joint hardware to a concrete flame mold with which the joint hardware can be attached to a concrete flame mold rapidly with a simple structure by engaging an attaching member to a female joint hardware and wedging the attaching member at a predetermined position of the concrete flame mold.

When the attaching member 13 is attached to the female joint hardware 11 by engaging a locking part 14 of a locking groove 13, and the female joint hardware 11 is supported by a seat 15 by projecting the attaching member 13 from a through hole 16 provided on the seal 15 for the female joint hardware, a wedge hole 17 perforated on the under part of the attaching member 11 is positioned to the lower side of a wedge receiving part 18 and the female joint hardware 11 is fixed to an end frame by the attaching member 13 when the wedge 19 is driven into the wedge hole 17 and is released from the end frame 5 when the wedge 19 is drawn out from the wedge hole 17.