To provide an adjustable follow plate capable of adjusting sealing force of a sealing member around the follow plate simply.

This adjustable follow plate 1 mounted in a suction port 12a at a lower end of a pump 12, pumping up and discharging liquid stored in a vessel P such as an oil drum and a pail can, and adjusting contact sealing force for an inner peripheral wall of the vessel P of the sealing member 7 mounted around it is provided with the hollow annular sealing member 7, a pressing ring 3 nipping, holding, and pressing the sealing member 7 between an outer peripheral fringe part of a follow plate main body 1a and it, and a plurality of eccentric levers 5 arranged across an interval around and on the pressing ring 3 and turning an eccentric cam part 5a in the vertical direction for a support column 4 erected on the follow plate main body 1a through a support shaft 6. A condition in which diameter of the sealing member 7 is expanded outward in the radial direction can be adjusted by turning angles of these eccentric levers 5.