Agaricus bisporus is a fungus belonging to the mushroom family and genus, also known as mushroom, foreign mushroom, etc. The fruiting body of Agaricus bisporus is medium-sized, with a cap width of 5-12 centimeters. It is initially semi spherical, later flattened, smooth, slightly dry with a gradual yellow color, and the edges are initially curled inward. Mushroom flesh is brown, thick, slightly reddish after injury, with a unique mushroom aroma. The gills are initially pink, then brown to black brown, dense, narrow, free, unequal in length, with a stem length of 4.5-9 cm and a thickness of 1.5-3.5 cm. They are brown, smooth, silky, nearly cylindrical, soft or medium solid inside, with a single-layer, white, membranous ring in the middle of the stem, and easy to fall off.