Appearance is different: fresh mushrooms are white or light yellow, young mushrooms are hemispherical, the edges are rolled inward, and they are umbrella-shaped when mature. The stem is supported in the center of the hat, white, and the folds are pink at first, then brown. The cap of Pleurotus ostreatus is 5 ~ 2 1 cm in diameter, grayish white, light gray, tile gray, cyan gray, gray to dark gray, with round edge, short stalk, length 1 ~ 3 cm, thickness 1 ~ 2 cm, and often fluff at the base.

Different strains: Pleurotus ostreatus is a kind of mushroom, also known as Pleurotus ostreatus, which produces basidiospores when the fruiting body matures, and soon forms a diaphragm after the basidiospores grow into bud tubes. And fresh mushrooms refer to fresh mushrooms and white mushrooms, also known as Agaricus bisporus.