Onions are generally not recommended for diarrhea. Onions are spicy, coarse fiber food. The patient’s gastrointestinal tract will suffer some damage during diarrhea, and then consume onions and other foods with severe irritation, will seriously increase the burden on the patient’s gastrointestinal tract. And onions as a kind of crude fiber food, eat during diarrhea is not conducive to digestion, metabolism and absorption, so diarrhea is not recommended to eat onions. During diarrhea should try to avoid eating too spicy, stimulating food, diet should be light, easy to digest food, to avoid aggravating diarrhea. If the symptoms of diarrhea are not relieved or accompanied by other symptoms, you should go to the hospital in a timely manner to clarify the cause of diarrhea and give targeted treatment.