Patients with diarrhea, body pain, the following common causes: 1, acute gastroenteritis: mostly because of unclean diet, and eat too much irritating food, causing gastrointestinal mucosa congestion, edema, exudation, patients often have nausea, vomiting, diarrhea, abdominal pain, accompanied by fever, generalized muscle aches, and even cause dehydration, electrolyte disorders, to drink more water to replenish electrolytes, considered as an infection can be given anti-infective treatment. 2, gastrointestinal flu: mostly due to viruses, can be given anti-infective treatment. Gastrointestinal flu: Mostly caused by viruses, there will be upper respiratory tract khat symptoms and gastrointestinal symptoms. When diarrhea is not very serious, you can temporarily take oral rehydration salts. If the diarrhea is severe, intravenous fluids should be given. Eat a light diet during the attack, do not eat greasy or cold things, eat more fresh fruits and vegetables, pay attention to abdominal warmth and observe changes in the condition.