To provide a pipe joint made of synthetic resin to facilitate connection of a pipe with a partition, wherein a partition plate is arranged at an internal part along an axial direction to form a plurality of pipe lines, as directional property is ensured.

This pipe joint 1 made of a synthetic resin is provided at least at one end with a connection part to connect a pipe with a partition wherein a partition plate is arranged at an internal part along an axial direction and a plurality of pipe lines are formed. The connection part 11 comprises an inner peripheral wall part 111 making contact with a wall inner surface to surround a plurality of pipe lines of the pipe end part of the pipe with a partition; and an outer peripheral wall part 112 making contact with the wall outer surface of the wall of the pipe end part of the pipe with a partition. The tip part of the inner peripheral part 111 is furthermore protruded than that of the outer peripheral wall part 112.