Onion and Lentinus edodes can be eaten together, and there is no conflict between them. Onion can sterilize and disinfect, so it is beneficial for human body to eat some onions properly. Boiling onions and mushrooms together can have a certain weight loss effect, which can improve the body's immunity and promote digestion. Mushrooms should be cooked, and uncooked mushrooms may cause diarrhea in the human body.