To provide a concrete formwork fastening fitting comprising a structure part provided on the head which is joined to a separator member, a saddle member mounted on the shell on which battens are placed, and a concrete formwork thrusting member provided on the rear, having such a vice structure for improving constructing efficiency.

The concrete formwork fastening fitting is used for a plate separator, a round separator or a plate-like separator. The flat steel square timber 17 is used to make the axial center of a fastening bolt 15 to be thrust and a supporting point of the head close to the shell 13, resulting in an advantageous vice structure. The two battens 17 are placed on the upper side of the forward/backward movable saddle member mounted on the shell 13 to reduce a risk of drop, resulting in safe and easy work. Their volume is smaller than that of steel pipe battens, resulting in easy storage at a site and easy temporary placement on a scaffold.