PURPOSE: To safely, efficiently execute concrete products when the products divided into circular arclike states are centrifugally cast and released.

CONSTITUTION: The method for releasing centrifugally cast tunnel liner from a mold comprises the steps of lifting an upper drum 11, falling it on a trestle 13, removing fixing bolts of a partition plate 14, pushing a concrete bearer to a tunnel liner 10 from inside, removing form tie fixing bolts 24, receiving the liner 100 to the bearer, and releasing it. On the other hand, a lower drum 12 is released by lifting concrete by using a plug 23 for casting grout, removing the bolt of the plate 14, and loosening fixing bolts of a drum end partition plate.