An object of the present invention is to provide a cryopreservation jig capable of easily and surely performing cryopreservation work of cells or tissues. The jig for cryopreservation of cells or tissues of the present invention is a cryopreservation jig having a placing part for placing cells or tissues together with a preservation solution, and the surface of the placing part holds the cells or tissues. It has a convex portion and a concave portion that stores the storage solution.
