To provide a structure for a pipe joint can easily and positively carry out sealing even if a high pressure fluid flows in a tube.

The structure for the pipe joint is equipped with at least one tube, an inner member equipped with a channel for fluid connecting tubes together, an adapter member abutting on the tube and having a continuous hole in a center, a joint body housing the inner member and the adapter member, and a fastening member pressing the tube against the adapter member. A joining reception face of a tapered shape abutting on the adapter member is formed on the inner member, and a faying surface of a tapered shape abutting on the joining reception face and a tube reception face abutting on an end face of the tube are formed on the adapter member.