To provide a branch joint capable of arranging a necessary number of piping connection parts toward necessary directions.

Each joint 2 comprises a cylindrical body 3 having a first fluid passage 32; and a joint body 4 having a second fluid passage 43, and including a piping connection part 5 connected with branch piping at one end and an opening 42 for rotatably inserting the cylindrical body 3 at the other end. The cylindrical body 3 has a through-hole 34 radially piercing a cylinder wall and making each fluid passage 32, 43 communicate with each other, a female screw 38 is formed at an inner circumference face of one end, and a male screw 39 screwed together with the female screw 38 is formed at an outer circumference face of the other end projecting from the opening 42. In a state of connecting a desired number of the joints 2, a connector member 7 for main piping connection is attached to the male screw 39 of a joint 2 at one end, and a cap member 8 blocking the first fluid passage 32 of the cylindrical body 3 is attached to the female screw 38 of the joint 2 at the other end.