Difference in appearance: the cap of pearl mushroom is smaller, round or semicircular, with a layer of edible mucus on the surface; the cap of shiitake mushroom is larger, oblate or umbrella-shaped, with smooth surface, often with dirty white hairy or flocculent scales on the edge, and the whole is brown or dark brown, with a more fragrant odor.

Different nutritional value: the sticky substance on the surface of the pearl mushroom umbrella is a kind of nucleic acid, which is beneficial to keep the energy and brain of human body, and also inhibit the role of tumor; shiitake mushroom also contains a unique ingredient - shiitake mushroom polysaccharides, this ingredient has a high medicinal value, and it can improve the immunity of human body.