Diarrhea after eating seafood is usually due to weak spleen and stomach, food is too cold, overconsumption or seafood spoilage, as follows: a. Weak stomach, seafood is rich in protein, weak spleen and stomach because of the weak digestive function of the spleen and stomach, can not digest and absorb the seafood eaten in time will cause abdominal pain, diarrhea symptoms. Second, too cold, seafood in low-temperature conditions, if you eat cold seafood, such as raw fish will stimulate the gastrointestinal mucosa triggered by diarrhea, so when eating seafood should try to cook before eating. Third, consume too much seafood, eat too much seafood will lead to the intake of too much protein caused by the gastrointestinal inability to absorb, so be sure to pay attention to the appropriate amount of food. Four, seafood spoilage will breed a large number of bacteria, eaten will cause intestinal infection resulting in acute gastroenteritis.