The invention discloses a matched device for reducing sulfur stored in a liquid sulfur pond and a use method of the matched device. The device comprises a liquid sulfur pump arranged above the liquid sulfur pond, the periphery of a mounting bottom board of the liquid sulfur pump is connected with an equipment lowering board, the equipment lowering board is in a step-shape, a horizontal board and a vertical board above the equipment lowering board are in an extension type regulation structure, the height of the equipment lowering board is adjusted to regulate the minimum distance from a suction inlet of the liquid sulfur pump to the pond bottom, the horizontal board below the step-shaped equipment lowering board is welded with the mounting bottom board together to prevent the evaporation of the liquid sulfur in the sulfur pond, the horizontal board above the equipment lowering board is flush with a civil foundation, and is additionally sealed. The mounting height of the pump is reduced, the height from a suction inlet pipe of the pump to the bottom part of the liquid sulfur pond is lowered, and the problem of storage of a large quantity of liquid sulfur in the liquid sulfur pond is solved.