Pickled barrel mushrooms are mostly overgrown, the cap is semi-circular, yellow-brown, with a layer of mucus on it, and the stipe is stubby. Pickled barrel mushrooms is a kind of wood rot fungus with a sticky cap that occurs in winter and spring. It is one of the main artificially cultivated edible fungi. The fruiting body is rich in polysaccharides, which can improve the body's immunity.