To provide a manufacturing method of a piping joint decreasing the kinds of movable fixture members through sharing, and reducing man-hours for preparation, by using the movable fixture member having a piping releasing hole that can be adjusted according to a shape of piping.

The movable fixture member 23 is provided with movable portions 24, 25 having piping releasing holes 24a, 25a wherein at least a part directly opens to the outside, and freely rotating directions in opening side of the piping releasing holes 24a, 25a. In a positioning process, the movable portions 24, 25 are rotated to make the opening sides of the piping releasing holes 24a, 25b fit with bending directions of coolant piping 11, 12. Therefore, the kinds of the movable fixture members is reduced to enable sharing, and the man-hour for preparation can be reduced.