A tissue pressing tool includes: a shaft that extends in one direction a tissue pressing part that is a rod-like or belt-like member having a rigidity enough to hold a shape thereof even when pressed against a tissue and a passive bending part that is arranged between the tissue pressing part and the shaft so that the tissue pressing part is capable of bending in all direction around an axis line of the shaft so as to keep an inverted state of the tissue by the tissue pressing part pressing the tissue linearly
