The embodiment of the invention provides sealing equipment and system. The equipment comprises a sealing pad and a sealing cover, wherein the sealing pad is mounted at the top periphery of a wine slot; the sealing pad is of a dual-hollow compensating floating sealing pad; the sealing cover is pressed on the upper part of the sealing pad; when the sealing cover drops onto the sealing pad, the sealing pad has certain deformation under compression of the sealing cover, and then, the sealing cover also sinks, so that grains in the wine slot generate a great deal of carbon dioxide gas in a fermenting process, the carbon dioxide gas jacks the sealing pad, the sealing cover ascends along with the sealing pad, and the carbon dioxide gas is exhausted to the outside of the wine slot through a smallgap between the sealing cover and the sealing pad; after gas is exhausted, gas pressure inside the wine slot is the same as outside gas pressure; the sealing pad continuously sinks under action of gravity of the sealing cover, and is pressed by the sealing cover, so that outside oxygen gas cannot enter a sealing slot, and therefore, sealing performances are ensured; and the wine slot is in a drying state all the time, so that grains do not have a moldy state after a fermenting period, and therefore, quality of the raw wine is ensured.