To provide a manufacturing method for a lashing metal fitting, which can contribute to reduction of transportation cost.

A blank 41 composed of a first face 41C and a second face 41D, each of which has an approximate triangle shape, which are arranged in a line symmetry to a folding line 41e, and the opposing oblique sides of which form a notch 41f with right angles, and a third face 41A and a fourth face 41B, each of which is connected to the bottom side of the first face and which is arranged in a line symmetry to the folding line 41e, is press-formed, and the first face 41C and the second face 41D of the blank 41 are folded at right angle with respect to the third face 41A, and the fourth face 41B and the fourth face 41B are folded at right angle with respect to the third face 41A and the oblique sides of the first face 41C and the second face 41D are connected and a spot welding are performed at the tip end of the first face 41C and the second face 41D.