To provide a sluice device which prevents the occurrence of water leakage and stably performs the lifting and lowering operation of a lid body.

In a sluice device 1, a lid body 10 is formed in a disk shape capable of closing a drain hole 5 and the right and left outer peripheries of the lid body 10 are fitted into guide grooves 3 respectively, a lever 11 capable of rotating the lid body 10 is connected to the lid body 10, and the outer surface of the lid body on the opposite side of the drain hole 5 is integrally provided with wedge-shaped projections 12 which change their position between a first rotation position entering the guide groove 3 and a second rotation position departing from the guide groove 3 according to the rotation of the lid body 10 by the lever 11 and come into contact with a guide member 2 at the first rotation position to press the lid body 10 to the drain hole 5 side.