The invention relates to a valve plate of a sluice valve. The valve plate comprises a valve plate body. The valve plate is characterized in that: cylinders, cylindrical tables of which have the same diameter, are cancelled on the sealing surface at the lower end of a shaft hole cylinder of the valve plate body; and tapered fan-shaped sealing surfaces on two sides of the valve plate are tangential with the bottom sealing surface of a valve seat. The valve plate has the advantages that: the valve plate and a valve rod which are spliced reduce the technical difficulty in the production link, can improve the sealing performance and are easy to manufacture. The tapered fan-shaped sealing surfaces on the two sides of the valve plate are tangential with the bottom sealing surface of the valve seat so that the rotating torque of the valve rod is reduced and the valve plate and a valve body are sealed reliably; and the casting symmetry requirements of the positioning surface and the sealing surface of the valve body are reduced during sealing, and good sealing performance of the valve body is ensured.