An organ model for endoscope, comprising a basic shape part that is formed by imitating the shape of a tubular organ and a tissue holding part that is detachably attached to the basic shape part, wherein: the tissue holding part comprises a main body that is in a tubular shape and provided with a window, the window communicating with the inner space, on the outer peripheral surface and a fixing member fixing a tissue piece (TP), the fixing member being disposed on the main body in such a manner that at least a part thereof overlaps the window; and, in the state of being mounted to the basic shape part, the main body is rotatable in the circumferential direction of the main body to the basic shape part.