Diarrhea after eating lamb may be related to improper consumption, food allergy, functional indigestion and other reasons. 1. Improper consumption: If you eat lamb at room temperature environment placed too long or cooking failed to cook, may be due to mutton spoilage or carry bacteria and cause diarrhea, and may be accompanied by abdominal pain symptoms. 2. Food allergy: for some allergic people, after eating lamb, the human body is allergic to some substances in lamb, triggering a perverse reaction, diarrhea can also occur. 3. Functional dyspepsia: Because lamb is not easy to digest, patients with functional dyspepsia can also experience diarrhea, abdominal discomfort and other symptoms after eating. In addition, acute gastroenteritis can also lead to diarrhea after eating lamb, it is recommended to go to the hospital in a timely manner, under the guidance of a professional physician to determine the cause of the disease.