Blackened mushrooms should not be eaten in order to avoid food poisoning and serious toxic reactions such as shock. The normal color of shiitake mushrooms is usually brown, if the blackening of shiitake mushrooms is considered to be caused by mold and decay, shiitake mushrooms should not be eaten at this time. Because if the blackening of shiitake mushrooms is caused by spoilage, the human body may experience abdominal pain, diarrhea, nausea, vomiting and other symptoms of food poisoning after consumption, and some patients may also experience shock, dehydration, fever and other serious toxic reactions. It is recommended to eat fresh shiitake mushrooms and avoid eating blackened shiitake mushrooms in order to prevent the organism from food poisoning. In addition, mushrooms need to be stored in the refrigerator, and the discoloration or odor of mushrooms is often considered to be caused by the deterioration of mushrooms, and should be avoided.