Pleurotus ostreatus is an important source of nicotinic acid, pantothenic acid, iron, copper and potassium, and is rich in vitamin B6, fiber, riboflavin and zinc. In addition, Pleurotus ostreatus contains a large number of bioactive phytochemicals, including β -glucan β -glucan in Pleurotus ostreatus can promote the immune system and play an important role in fat metabolism, which also shows that Pleurotus ostreatus can reduce blood cholesterol.