To provide a connection pipe to be pressed into a rubber hose satisfactorily while preventing the buckling of the rubber hose.

The rigid connection pipe 18 to be pressed and fixed into the rubber hose 10 comprises guide planes 24, 26 acute-angle shaped in an approximately serrate cross section and formed on the front end side as the press-in side for guiding operation during press-in, and annular protrusions 20, 22 formed at the front end and adapted to be bitten into the inner face of the rubber hose 10 for preventing the come-off thereof. On the further front end side than the annular protrusion 22, a cylindrical supporting part 30 is provided whose outer diameter is smaller than the inner diameter of the rubber hose 10 and which supports the rubber hose 10 ranging its inner face outward to the radial direction on the further front end side than the annular protrusion 22 during press in the rubber hose 10.