WAFER PLACEMENT TABLE

A wafer placement table includes an upper substrate including a ceramic substrate and having a wafer placement surface, a lower substrate disposed on a lower surface of the upper substrate including a refrigerant flow path or a refrigerant flow-path groove, a through hole extending through the lower substrate in an up-down direction to intersect with the refrigerant flow path or the refrigerant flow-path groove, a screw hole provided in the lower surface of the upper substrate, at a position facing the through hole, a screw member inserted from a lower surface of the lower substrate into the through hole and screwed into the screw hole, and a refrigerant-leakage prevention member that prevents the refrigerant from leaking out to the lower surface of the lower substrate through the through hole into which the screw member is inserted.